Hair loss can often occur due to physical or psychological stress, even in the absence of genetic predisposition. If it becomes severe, it can lead to noticeable thinning of the scalp. At that point, people realize the seriousness of the situation and come to the hospital. The most important aspect of hair care that I focus on is the hair washing routine. I pay a lot of attention to using warm water at first and rinsing with cold water at the end. There is a lot of misinformation circulating about this. 

Hello, subscribers of Knowledge Hansang. I am Dr. Yong, a specialist in hair loss. I have been managing my own hair loss for 13 years and scalp inflammation for 21 years. Today, I would like to share some valuable information with you. Over time, more and more people are coming in with concerns about hair loss.

The Western-style eating habits are increasing. They have been gradually present for a while, but these days, many people are experiencing hair loss due to personal stress. For example, with the rise of social media, there is a lot of stress from comparison culture and feelings of alienation. Additionally, the current economic situation is not good, leading to the saying that investment is essential, which causes everyone to reduce their sleep and work harder. As a result, it seems that the number of hair loss patients is increasing. According to statistics from the Health Insurance Review and Assessment Service, the number of patients visiting for hair loss has significantly increased year by year, almost multiplying several times. Many women are also coming in. The first reason, as mentioned earlier, is that there are many stress-inducing factors, leading to conditions like telogen effluvium and alopecia areata.

Recently, many patients have been coming in for hairline correction and hair transplants due to an increased interest in beauty. Hair loss, which we often fear and refer to as baldness, is largely influenced by genetic factors. However, this is only a tendency; it is possible to experience baldness even without a genetic predisposition. Poor lifestyle habits and various stressors can also lead to hair loss, so it is important to be aware of this. I experienced this myself. I suffered a lot from scalp dermatitis and hair loss during middle and high school, and my scalp was in very poor condition. At that age, it is quite rare to experience genetic male pattern baldness, so I believe that about 90% of my hair loss concerns were likely due to scalp dermatitis. Let me break this down into two main points.

The first type we fear is male pattern baldness, also known as androgenetic alopecia. The second type is telogen effluvium. Androgenetic alopecia typically first manifests as a reduction in volume; the most significant symptom is that the hair becomes thinner. As a result, styling becomes more difficult than before, and the volume decreases. Additionally, androgenetic alopecia is influenced by hormones, which often leads to accompanying scalp inflammation and increased itchiness. To summarize, we can say that the hair becomes thinner and the scalp becomes itchy. In contrast, telogen effluvium does not significantly affect the thickness or volume of the hair initially. However, as hair loss becomes excessive, the overall amount decreases, leading to a loss of volume, but it does not thin out before falling out.

If you notice such differences, it might be a good idea to visit a hospital, as my hair has become noticeably thinner and lacks strength compared to before. Telogen effluvium is characterized by a sudden increase in hair loss. You might find that a lot of hair falls out when you wash it, or there are too many strands on the floor after blow-drying. So, try pulling on your hair a bit; if you notice that more hair than usual is coming out, it could be serious. When you start to see some of your scalp showing through, that’s when you realize the seriousness of the situation and decide to go to the hospital. This is exactly what telogen effluvium is. It often occurs due to stress in daily life, whether physical or psychological, so maintaining good lifestyle habits and having the right mindset to cope with it is very important.

The most important thing is to identify the cause. If telogen effluvium becomes severe, it can lead to significant hair loss, to the point where the scalp may become visible. Typically, when telogen effluvium starts, natural recovery occurs within three to six months. However, this is only true if the underlying cause has been addressed. If the cause remains, telogen effluvium can progress to chronic telogen effluvium lasting more than six months. At that point, treatment becomes very challenging. Therefore, if you notice that you are losing a lot of hair, it is crucial to consult a specialist as soon as possible to receive an accurate diagnosis and appropriate treatment. Often, the causes of telogen effluvium are related to one's lifestyle, and by addressing these causes, most people can see improvement naturally. The aspect I focus on the most for hair care is the hair itself.

I pay a lot of attention to my hair washing routine. Since I have struggled with hair loss since I was young, I have experienced a lot of stress regarding it. Therefore, the details of my hair washing routine, such as which shampoo I use and how I massage my scalp while shampooing, are very important to me. I emphasize the habit of washing hair quite a bit. The first thing I prioritize is the temperature of the water. When rinsing, I used to use cold water, but you need to know that this is actually a very bad habit for the scalp. This is especially important for me because I have scalp dermatitis, and hot water can be irritating. Using hot water can also dry out the scalp, leading to the loss of the protective layer.

As the scalp becomes dry, it becomes more vulnerable to external environments, making infections easier to occur. This increases the likelihood of scalp inflammation worsening. When washing and rinsing, using cold water can also be stressful. Therefore, I emphasize the importance of washing hair thoroughly from start to finish. Another important point is how many times a day one washes their hair. When I see patients, I often ask why they wash their hair only once. Many patients respond that if they wash it more than once, their hair will fall out more. Most people have this concern, but that is absolutely not the case. The amount of hair that falls out in a day is already predetermined. Regardless of how one's lifestyle has been over the past month or two, or if they have been drinking heavily in the past week, the amount of hair that falls out today is already set. So, it is...

I emphasize the importance of finding a routine that suits you while maintaining cleanliness. When we wash our face, there is a common misconception that we should start with warm water and finish with cold water. However, it is actually better to wash your face with lukewarm water throughout the entire process. Of course, when using hot water, the pores open slightly, and when using cold water, the pores close a bit. This is because they react sensitively to external temperatures. In fact, the moment you finish with cold water, the pores may slightly contract, but as soon as you step outside the bathroom, they will open again to adjust to the external temperature. Therefore, how you usually maintain your lifestyle and the environment you are in are more important for your pores. I recommend using lukewarm water from start to finish when washing your face, and the same goes for washing your hair.

I want to suggest using lukewarm water. I always take a shower when I wash my hair. I stand under the water stream from behind, using lukewarm water. When the water hits my back, it feels refreshing and gives me a slight sense of relaxation. I usually do this for about 30 seconds to make sure my hair is thoroughly wet. After that, I apply shampoo, making sure to lather it well. Then, I wait for about 30 seconds to a minute before rinsing it out. In fact, when I give myself a light massage, 30 seconds passes quickly. In the evening, I follow this routine, but in the morning, I don't have much time, and since I already washed my hair in the evening, I don't feel the need to wash it thoroughly in the morning. I tend to wash it a bit more lightly in the morning. So, when you wash your hair,

It's better to shampoo your hair when it's wet. This way, the shampoo can be distributed evenly, and when the hair is somewhat soaked, it helps to remove old dead skin cells and dandruff more effectively. Some people think that shampoo is bad for their hair, so they rinse it out immediately after applying it. Of course, if you wash your hair twice a day, it might be a bit better, but most women typically wash their hair once a day. It's important to use shampoo to cleanse thoroughly, but if you rinse it out too quickly, the shampoo won't work properly and will just wash away. Therefore, I recommend leaving the shampoo in for about a minute before rinsing it out. Additionally, there is no evidence that shampoo is harmful to the body, but one thing to note is sulfates.

There are surfactants, such as sulfates, which have been shown in research to potentially cause contact dermatitis. Therefore, when choosing shampoo ingredients, I tend to avoid sulfate-based surfactants as much as possible. However, it's important not to misunderstand this; just because a product contains sulfates doesn't mean it's automatically bad. If it works well for you, sulfates can be a cost-effective surfactant. If you try sulfates and find they don't suit you, then you might consider that it could be due to the sulfates and try a sulfate-free option afterward. Most sulfate-containing products are generally cheaper. When washing your hair, massaging the scalp usually involves pressing down, but this is not effective for blood circulation. In fact, there is no evidence to support that it has any benefits. If there’s no harm in doing it, I would say it’s fine to continue, but when it comes to hair...

When washing my hair, I want to emphasize that some people scrub their scalp too hard. Even if you've shampooed, physically trying to remove the accumulated dead skin and sebum by scrubbing aggressively can lead to hair loss. I want to stress that this should not be done. So, when I wash my hair, I do it gently, using a wide circular motion. This provides stimulation without being harsh. I apply the shampoo gently and evenly, creating a lather, and then rinse it out thoroughly. It's similar to brushing your teeth; it's better to do it gently. Using a small motion while brushing is preferable, as scrubbing too hard can damage your gums and teeth. This is also related to scalp inflammation. The reason for scalp inflammation is hormonal.

There are changes, and if we don't manage it well, for example, if we go to bed without washing our hair at night, it can lead to an overgrowth of normal bacteria in our bodies. When there is an overgrowth, the scalp weakens, and the skin barrier gradually breaks down, allowing external bacteria to invade. When external bacteria invade, it can lead to folliculitis or even cause the scalp to break out completely. At that time, various bacteria can proliferate, and they generally thrive in humid environments. They reproduce well in such conditions. Therefore, if you wash your hair and do not dry it properly, these bacteria can multiply. One of the worst habits is going to bed with wet hair after washing it at night. This makes the scalp environment worse, and the pillow also creates an unfavorable environment.

It will get better, but the truth is that we don't often wash our pillows in our daily lives. So, no matter how well we take care of them, if the pillows end up in that state again, it can create a vicious cycle. Therefore, it's essential to dry your hair properly. In my case, when I had more time in the past, I used to dry my hair only with cool air from a fan. There are two issues with using hot air and cool air. The reason hot air is not good is that, as I mentioned earlier, it can dry out the scalp and worsen scalp conditions. So, when using hot air, it's important to ensure that the air does not blow directly onto the scalp. If it does need to blow directly onto the scalp, then it should be done with a bit of cool air. For those watching this video, if you feel like you don't have time and your hair is long, drying your hair can be...

It's tough. In such cases, you can use hot air, but make sure to keep a distance while drying. Also, for men with short hair, you can start with warm air and then switch to cold air while drying; that works well. What I consider most important is excessive drinking. Of course, smoking is bad too, but excessive drinking is the worst. So, when I ask my patients if they drink a lot, most of them do. This is because their scalp is in bad shape, and their hair is not healthy either. Many of these individuals tend to drink a lot or have habits of constantly touching, scratching, or messing with their scalp. Drinking excessively can make us feel relaxed to some extent, which is nice, but usually, people who drink don't do so in moderation. What I mean is...

When we assume excessive drinking, it is important to note that alcohol acts as a toxin in our bodies, causing significant stress. It also dries out our skin. When we drink excessively, we tend to seek out water, which leads to a loss of moisture in our bodies, causing us to become dehydrated. This results in dry skin and a dry scalp, which can lead to scalp inflammation. As this condition worsens, it can have negative effects. Additionally, alcohol raises the temperature of our skin and scalp, and an increase in scalp temperature can further exacerbate scalp inflammation. All of these factors can negatively impact hair loss. It is much more important to avoid bad foods than to focus solely on eating good foods for hair loss. There are foods that are rumored to be good, such as black beans.

There are stories and beliefs that certain foods are good for hair, and it is true that black beans contain components like anthocyanins and various antioxidants, as well as substances that resemble female hormones. However, the important thing is that the amounts of these components are not sufficient to significantly help with hair loss. So, it might be enough to acknowledge that such components exist and enjoy eating them. 

On the other hand, there are foods that are not good for you. As I mentioned earlier, alcohol is one of them. Personally, I avoid drinking coffee on an empty stomach because it can impair digestion. It's better to refrain from foods that negatively affect your stomach. Additionally, everyone has foods that do not agree with them. For example, if I eat flour-based foods, my skin becomes itchy, or if I eat fried foods, my skin worsens. It's advisable to avoid such foods. This is a bit more detailed...

To explain, I mentioned earlier that I don't drink coffee, especially on an empty stomach. It tends to cause gastrointestinal issues for me. When I drink coffee on an empty stomach in the morning, I find that my digestion is off for the entire day. If my digestion is poor, the food I eat isn't fully absorbed. Of course, there are those downsides, but primarily, if digestion is not functioning well, it leads to digestive disorders. These digestive issues can also negatively affect our scalp and skin. Therefore, gastrointestinal health is very important to me, and I personally avoid anything that disrupts my digestive function as much as possible. This includes coffee and spicy foods, which I really try not to consume. I also make a conscious effort to avoid overeating. Additionally, some people may experience gastrointestinal issues when consuming flour, which can also be linked to skin and scalp problems. So, please keep these things in mind regarding certain foods.

I need to be careful. It would be good if you could take this advice. When it comes to dieting, it's fortunate if you can exercise to lose weight, but most women and men tend to first reduce their food intake significantly. Normally, I get about 1,000 calories from food, but suddenly I cut my energy intake down to 200 calories. In that case, I usually use about 500 calories for my heart and brain, and the remaining 300 for my muscles, while I was also providing around 50 calories for my hair and skin. However, if this suddenly drops to 200 calories, our body is very smart and prioritizes sending energy to areas that are vital for survival. Since I was consuming 500 calories before and now only 200 are available, the body has to use all of that 200 calories. This means there’s nothing left for our skin and scalp. As a result, the cells in those areas cannot function properly.

As you gradually lose weight, your skin also deteriorates. This is why people who are dieting often have dull and unhealthy skin, and as a result, they may experience hair loss and thinning hair. Many people on a diet suddenly notice excessive hair shedding, and this is precisely the reason behind it. Those who are struggling with hair loss likely also have scalp issues. I personally experienced a lot of stress from a young age, even having very negative thoughts during middle and high school, but as you can see now, I am doing well. It is definitely possible to overcome these challenges. When I was a student, there wasn't much information available, but nowadays, there is an overwhelming amount of information. Among all that information, try to filter out the correct ones and take action. If you take action, there are many effective ways to overcome these issues, so don't be too disheartened and try not to dwell on negative thoughts. If you're struggling, don't suffer in silence.

I want to suggest that you start today by consulting with the many good doctors and experts around you to receive an accurate diagnosis and to pursue the right treatment step by step. Why do people with hair loss seek treatment? They want to create the appearance of volume and enhance their hairstyle. However, just one good shampoo can make a significant difference in how your hair feels. The effects that would normally take three to four months of diligent treatment can be felt with a quality shampoo. But if you focus too much on adding volume, your hair can become dry and brittle. Therefore, if you only think about the condition of your hair, you might lose volume. I believe finding a balance in between is essential, and personally, I think a good shampoo is truly important.

One of the doctors I consider important is someone who emphasizes the daily use of products. In fact, I use them twice a day, so it has become almost a part of my daily life. However, if these products do not suit me, it can lead to severe scalp dermatitis, which can also be a cause of hair loss. When I use a shampoo that doesn't match my needs, it can cause scalp dermatitis, and this dermatitis can lead to hair loss. Therefore, shampoo plays a crucial role for both hair and scalp. For example, there is data showing that sulfate-based surfactants can cause contact dermatitis if used repeatedly by individuals who are sensitive to them. This highlights how certain ingredients in shampoos can trigger dermatitis. Additionally, many shampoos contain various extracts, and those extracts may not be suitable for everyone. For instance, camellia flower extract.

Camellia flowers could cause allergies for me, and these extracts require a small amount of preservatives for storage. The preservatives might not suit me either. Considering these various possibilities, there could be ingredients in the shampoo that don't match my needs, which is why I could definitely feel itching and irritation. If this continues, it could lead to severe dermatitis or scalp inflammation, and in worse cases, it could even result in hair loss. Therefore, the impact that a single shampoo can have on me can be enormous, like a butterfly effect. It is very important to choose a good shampoo that suits me well. In my mid-twenties, during that time, my sebum production was very active, and my scalp was really in bad condition. But back then, I didn't realize that changing my shampoo could be the reason for it.

Because I'm constantly stressed about exams, can't sleep, and there are so many worsening factors. I thought about changing my shampoo, and it actually got better. I realized that the issue wasn't something else, but it was the shampoo. So for those watching this video, it could be that I've been sleeping less recently, or it could be because it's exam season, or maybe I broke up with my girlfriend—there could be many reasons. However, one of the biggest reasons could also be the shampoo, so I hope you consider this as well. The shampoo itself can improve folliculitis or scalp conditions, and this usually falls under medicinal products. You've probably heard of medicated shampoos like Nizoral or Noviprox, which can play a role in treatment. Most people who say they felt better after changing their shampoo are referring to that shampoo.

The product itself uses quite good ingredients and may have used components that are as non-irritating as possible. However, it is also likely that you were using a shampoo that didn't suit you before. Considering all these factors, the shampoo can help alleviate scalp issues and improve hair condition. Hair loss shampoos often focus on enhancing hair volume, but in trying to boost volume, the hair can become somewhat dry. Therefore, the best shampoo is one that finds a middle ground—not too much volume, but also not neglecting hair quality. It’s important to strike that balance to maintain both volume and hair texture. You should try various shampoos, and that’s what I’m advising you to do. When I look at shampoo ingredients, I consider these aspects.

I tend to pay attention to whether there are sulfates in the products I use. Most of the shampoos I have used and been very satisfied with do contain some form of sulfates, but I prefer those that do not have sulfate-based surfactants. Additionally, if there is menthol as a fragrance, it tends to irritate the scalp a bit more. Therefore, I prefer products where menthol is listed towards the end of the ingredient list. Another thing I tend to avoid is shampoos that contain a lot of different extracts. If there are too many extracts, there is a higher chance that one of them may not suit me. So, I focus on these four criteria when choosing shampoos. Personally, I also see a significant effect from the wool effect, which makes the hair look fuller, similar to wool.

When I talk about it, I mention why people with hair loss undergo hair treatments. They do it to make their hair look voluminous and to maintain a certain feel when styling their hair. Of course, this excludes those who are completely bald. Just using a good shampoo can make a huge difference. The effect that takes me about three to four months of diligent treatment can be felt with just one decent shampoo. Because of this, I tend to pay a lot of attention to the volumizing effects when choosing a shampoo. Today, I also washed my hair with a good volumizing shampoo. The term volumizing doesn't just mean that the hair looks fuller due to an increase in density; it also refers to the slight friction or texture that adds volume. When we go to a salon, the stylist often adds volume by applying the product at the roots, which slightly lifts the hair. That's the kind of effect I'm talking about.

You can see that visually, it looks a bit fuller and gives the effect of having more hair. A tip for choosing a shampoo with good volumizing effects is to check the detailed page if you're curious about a particular shampoo. There will likely be reviews from other people who have used it. If those reviewers have a good sense, they will show the viscosity of the shampoo. When I review shampoos, I always squeeze some out and let it flow. If it runs down quickly, it usually means the volumizing effect is not good. If it flows down slowly, it tends to have a better volumizing effect. 

Another important factor to consider is the irritation level of the shampoo. Since I will be using it every day, if it causes irritation, that's not acceptable; it can be itchy. So, I pay close attention to the irritation level. Lastly, I consider the price. Since it's a daily necessity, I prefer to use something that offers good value for money.

I have been trying out many cost-effective products and sharing my findings. If the cleansing power is too strong, it can strip away our scalp's natural layers, which may lead to irritation. This can result in hair loss due to scalp damage. Therefore, I recommend using products with a moderate cleansing power, especially if you wash your hair only once a day, to avoid irritation. For those who, like me, wash their hair twice a day, using a product with slightly weaker cleansing power is perfectly fine. So, don't obsess over cleansing power. If you find a shampoo that you really like but feel its cleansing power is a bit lacking, you can always wash your hair again in the evening. I want to emphasize that you shouldn't be overly fixated on cleansing power. It's not usually indicated on shampoo labels, but products containing sulfates are typically stronger cleansers.

The cleansing power is a bit high, so it's said to be a cost-effective ingredient. However, it's actually difficult to determine that. When we buy shampoo, some products are categorized as suitable for dry, normal, or oily hair. This means that for oily hair, the surfactants are increased. So, if you find that your hair gets greasy and sticky by the afternoon, you should use a shampoo for oily hair. If you've tried a shampoo for oily hair and find it too strong, then you can switch to a normal one. That works well. However, for those like me who wash their hair twice a day, using a shampoo for dry hair is also fine. Usually, when we choose a shampoo, we look for functional ingredients that help with hair loss, such as salicylic acid and others. These ingredients have slightly different functions. For example, salicylic acid helps dissolve dead skin cells, which can be beneficial for reducing hair loss.

I received certification from the Ministry of Food and Drug Safety, and personally, I consider such things as a default. I see that the irritation level is acceptable. I repeat, this is very important. There is actual data regarding this. When using a shampoo with 1% caffeine, the activity level of other shampoos tends to increase slightly. There is data supporting this. So, while the level of evidence may be somewhat low, if you are considering whether to use a shampoo with caffeine or one without, the one with caffeine is likely to be a better option. Therefore, if I were to compare two shampoos under the same conditions, I would recommend the one with caffeine. However, a caffeine-containing shampoo may not suit me personally. The fundamental premise is that a shampoo that works well for me is much more important. Additionally, there are ingredients like brewer's yeast.

In the case of beer yeast, it contains various B vitamins and proteins. These components help activate hair and become part of the hair itself. So, while it can be beneficial, it's difficult to provide concrete evidence on how much it improves hair loss or enhances hair quality. Therefore, I always emphasize that rather than focusing too much on the ingredients, you should pay more attention to the aspects I mentioned earlier. This way, you can live each day with greater satisfaction regarding your hair. For those struggling with seborrheic dermatitis or folliculitis, it's advisable to use medicated shampoos. Many regular shampoos are marketed as anti-dandruff or seborrheic scalp shampoos, but while they do contain certain ingredients, the concentration of those ingredients is much more important. However, typically, such products...

General shampoos may not have sufficient active ingredients to determine their effectiveness. Therefore, it is essential to use medicated shampoos that contain a guaranteed amount of active ingredients. The one I use is Noveproks, which has a foaming agent that works best for me. The reason for persistent scalp inflammation is the overgrowth of fungi on our scalp. Ingredients like ciclopirox olamine or nizoral, as well as zinc pyrithione, help inhibit the growth of these fungi on the scalp. It is crucial to have a guaranteed concentration of these ingredients to see results. For those struggling with scalp inflammation, you don't need a prescription; just go to the pharmacy and use these types of shampoos. For severe cases, use it twice a week; I use three different ones.

I have a recommendation for you. The most important thing is that washing your hair in the evening is a surprisingly cost-effective habit. People with scalp issues often come to the clinic. If they don't have a proper hair-washing routine, I suggest they wash their hair in the evening and then go to bed. Many of them come back after about three months saying they feel better. So, the first point is to wash your hair in the evening, dry it well, and then go to sleep.

Another simple tip is to use antihistamines, which you can buy at the pharmacy without a prescription. If you have scalp issues, taking medication that alleviates itching and reduces inflammation is very important. For those who tend to touch or scratch their scalp frequently, there is a high possibility they might do so while sleeping. Therefore, taking one of these medications before bed can help prevent scratching during the night.

When I wake up in the morning and wash my hair, the amount of hair that falls out decreases, and over time, the chances of my scalp hair becoming thicker and healthier increase. So, it's really good to make use of this. Next, the third item is something you probably haven't seen before. These are gloves that I usually wear while sleeping, and they can be beneficial for those who have severe issues. When we are awake, we can consciously avoid scratching, but for those who tend to scratch while sleeping, it's a different story. They will scratch without fail, and their scalp condition worsens. For those individuals, the probability of scratching while sleeping is 100%. I have tried various things, and while I have seen some improvement, I wish it could get even better. However, there seems to be a limit to how much it can improve. One day, I noticed blood under my nails, and seeing that made me try wearing gloves.

I also tried wearing gloves, but whenever I was awake, the gloves would either get wet from the rain or I would take them off. As an alternative, I tied my hands with shoelaces while sleeping, and after that, I noticed a significant improvement. So, if you have concerns about scalp dermatitis or hair loss, consider whether you scratch your scalp while sleeping. If you think you do, try the method I mentioned earlier. If you still feel uneasy and want to try something else, I have been using gloves designed for extreme marathons, which you can also find by searching for dementia gloves. This could be an option. There are times when people come to me because they are experiencing severe hair loss. During consultations, I often find that these individuals tend to dye their hair quite frequently. Just by looking at their scalp, I can tell.

My scalp is in very bad condition, and of course, my hair is falling out a lot. This is one of the most severe cases I have experienced. I am concerned about my scalp, but I feel I need to dye my hair. For those who are in a similar situation, it is important to quickly implement the correct methods. The first thing I focus on is that even simple hair dyeing can significantly cause hair loss. Hair dye usually contains oxidizers that strip away the cuticle layer and break down the melanin pigments, effectively killing them. Then, artificial pigments are introduced. This process itself already removes the cuticle layer, which can also strip away the skin barrier. This can weaken the scalp significantly, and even light dyeing, if done frequently, exposes the scalp to an environment that can worsen its condition.

Basically, dyeing involves stripping away the cuticle layer of the hair, so if you do it frequently, it can naturally damage your hair a lot. As I mentioned, it can also harm the scalp significantly, which is not good in many ways. For example, if we want to farm well, the soil needs to be fertile. If the soil becomes dry and the hair becomes brittle, just like if the soil is damaged, the crops will wither. Hair dye not only damages the soil but also directly affects the crops, so those who dye their hair often and have bad habits will inevitably have poor hair quality. The people I would advise to be most cautious about dyeing are those with scalp conditions, those with sensitive scalps, and those with thin skin layers. They really need to be careful with hair dye because the dye fundamentally strips away the scalp.

Because of this, those who already have scalp inflammation and are sensitive may have a damaged or weak skin barrier. If they then dye their hair, it’s like fanning a flame; it exacerbates the situation. Therefore, I recommend that these individuals ensure their scalp has recovered to some extent before proceeding. Additionally, those with sensitive and thin scalps can easily react to the irritation from each hair dye, so they need to be cautious as well. Personally, I don’t dye my hair often. I have started to notice a few gray hairs, but I will deal with that later. For now, I avoid dyeing my hair and only get a perm occasionally. However, when my scalp is not in good condition, I absolutely do not get a perm; I only do it when my scalp is healthy. When I go to the salon, I also ask the stylist to avoid touching my scalp as much as possible. I earnestly request this from the hairstylist.

It often starts with hair dyeing. If dyeing goes wrong, it is likely due to individuals having poor dyeing habits that worsen the scalp. Dyeing is fine, but those who do it too frequently, use overly strong products, or have other bad habits tend to have consistently poor scalp health. When the scalp deteriorates and is exposed to such stress, hair loss can occur. Therefore, the worst outcome is, of course, hair loss. It's not something that happens very often, but there are people who come in because they experience severe hair loss from time to time. When I take their history and provide various consultations, I often find that they are individuals who dye their hair quite frequently. Upon examination, the scalp appears very red and is in poor condition, leading to significant hair loss. This is one of the most severe cases I have encountered. The risks associated with dyeing, as I just mentioned, are those conditions.

People who are in certain situations and those who take a lot of iron supplements are the first to consider. The dye itself reacts more readily with metal components, so using shampoos that contain trace amounts of metal or taking a lot of iron supplements can lead to some iron being absorbed into the hair. In such cases, the dye does not take well. As a result, people tend to dye their hair more frequently and look for stronger products. They also tend to leave the dye on for longer periods, which can put more strain on the scalp. Therefore, it is advisable to consider these factors when preparing for hair dyeing. Rinses or conditioners coat the hair cuticle layer, and when the dye is applied, it strips this coating. If you dye your hair after coating it, the dye will not penetrate well, leading to bad habits, as I just mentioned.

Before dyeing, please avoid using strong and long-lasting products. After dyeing, you will need to recover the damaged hair, so using a rinse and conditioner will be helpful. For those who go to salons, there are professionals who will likely take good care of you. However, I would advise against going to salons that offer significant discounts for dyeing. In my early twenties, I didn't dye my hair but went to a salon that had a promotion for very cheap perms. They just slapped the product on my hair without much care. In such cases, you need to be cautious. It's generally better to communicate your needs to the stylist before dyeing. For example, if I have a sensitive scalp, I would ask them to be as gentle as possible. That's important. Also, for self-dyeing, if you don't have professional knowledge...

We usually start from a good condition. Typically, when applying hair dye, it takes about 30 minutes for the color to fully set, so it's important not to leave the dye on for too long. Of course, root touch-ups are important, but it's crucial to avoid contact with the scalp as much as possible. This is very important. 

Thirdly, it's essential to dye your hair when your scalp is in good condition. I find it difficult to assess my own scalp, but what I focus on is that I should not feel any itching or irritation. Additionally, the scalp should not be red. A red scalp indicates that it is in a weakened state, and if you feel itching or irritation, that is the next step of concern. If your scalp is red, it means it is quite sensitive, so in that case, it's better to postpone dyeing until it improves. Nowadays, even when the scalp is not in good condition, people still insist on dyeing their hair.

If you need to dye your hair, I would recommend using something like coffee. There are basically two main methods for dyeing hair. One method involves stripping away the cuticle layer, killing the melanin, and then dyeing the hair, while the other method simply coats the cuticle layer with color. In the case of coffee or henna, these methods provide a coating, which means there is significantly less damage to the hair and the scalp. If you have concerns about your scalp but still want to dye your hair, coffee is a great option. For coffee, you can brew it and mix it with water. For example, fill half of the container with coffee and the other half with the shampoo you normally use, about two parts shampoo. Then, close the lid and shake it to mix the shampoo. After that, you can...

If you leave it unattended, it can become ineffective quickly. The duration of its effectiveness is short, as the coating tends to wear off quickly. However, since it doesn't have a negative impact on my scalp and hair, I can use it frequently. In fact, some people even mix coffee with water to use it as shampoo. Following the method I just mentioned, it's fine to incorporate coffee into your routine, or you can periodically concentrate coffee and apply it to your hair before dyeing it. As for scaling, it's commonly done at scalp salons and specialized hair loss clinics, but it can be expensive. Nowadays, there are many products available, and there are also various home remedies. For example, jojoba oil and tea tree oil are popular options that are often shared on YouTube, where you can evenly spray them on your scalp.

They say that using a cloth to gently scrape it off can be a decent method. This is because these oils are very compatible with our scalp environment and are quite similar to our sebum. Therefore, they can be effective and help remove buildup. However, personally, I don't recommend scaling in that way. This is because the act of scaling, whether chemical or not, can often irritate the scalp. For those with severe scalp inflammation, it's better to avoid this method. If your scalp is fine and you want to remove some leftover dye because you've dyed your hair, you can use a small amount of tea tree oil or jojoba oil, applying it evenly to the scalp. Just make sure not to scrape with a cloth. Instead, gently massage it like you would when shampooing for about 5 to 10 minutes.

After dyeing, it's important to rinse thoroughly. Our scalp can become quite irritated after dyeing, so soothing the scalp is very important. Tea tree oil has soothing properties, and aloe vera also helps with calming. Applying a scalp pack or massaging with some oil can be beneficial. However, what's even more important is to prevent the scalp from becoming more irritated. For example, if you've dyed your hair and your scalp is already irritated, consuming alcohol will only worsen the condition. It's also advisable to refrain from using new shampoos for a while, as they might not suit you. Naturally, you should avoid touching your scalp, and it's best to limit washing your hair frequently for the time being. In this regard, when dealing with an irritated scalp, we should be cautious.

When you're angry, you need to be careful. The scalp is the same; when it's in a state of anger, it's crucial to calm it down as much as possible and to avoid further irritation. The signals that the scalp sends are, first, redness. If it worsens, it starts to become dry and itchy. This is a sign of irritation. If it progresses further, it begins to sting, and it can become painful. If it continues to worsen, it can reach a level of burns that are irreversible. However, it's rare for it to reach that stage. If you quickly and effectively address the first, second, and third steps, it will improve. Therefore, it's important to practice the correct methods promptly. What I consider most important is sleep; it's essential. Sleep is more important than you might think. The second is mental health, and the third is digestive health. These are truly important because the condition of our body is reflected in our skin.

As we age, our blood vessels can narrow. Over time, just like pipes can get clogged and contaminated, our blood vessels can also accumulate various substances. This leads to a narrowing of the blood vessels. As we get older, things like fats can build up, causing blood pressure to rise and potentially leading to conditions like hyperlipidemia. For older individuals, the health of their blood vessels is crucial. Therefore, focusing on basic aspects like sleep, digestive health, and mental well-being is very important for our overall health. I always try to maintain a positive mindset. When something bad happens, instead of thinking, Why is this happening to me? I prefer to think, It could have been worse. I strive to keep this positive thinking in my life.

As elasticity decreases, the scalp narrows. When it narrows, the blood vessels that reach the skin of our scalp become very constricted, making it difficult for nutrients and oxygen to be delivered effectively. This is why hair naturally becomes thinner and weaker. Additionally, older individuals tend to have a reduced ability to absorb nutrients due to decreased stomach function. Therefore, I recommend paying more attention to your nutrient intake, including supplements. Furthermore, using minoxidil, which is available at pharmacies and is very cost-effective, can also be very helpful in widening blood vessels. I also think that dyeing hair will become a part of our daily lives. It is important to establish a routine that minimizes damage to the scalp and hair through proper methods. Dyeing hair will indeed become a regular part of our lives.

Routine is very important. If this routine is disrupted, it can lead to incorrect dyeing methods that can harm our scalp and hair health. So, I hope you take note of the methods I shared today to develop good dyeing habits that maintain your scalp and hair in a proper and healthy way. If there are any lifestyle habits that can help improve your scalp, it would be good to identify and adjust them. By doing so, you can think about your hair while dyeing it and enjoy a daily life where you can dye your hair well.

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