As a plastic surgeon, I often cut off part of patients' scalp during surgery, sometimes I encounter incredibly thin scalp, and even doubt my eyes: "What's going on? Because its thickness is less than half that of the average person. When I meet people with very thin scalp, I will ask them how to maintain their hair. As a result, most people are very careful when washing their hair with shampoo because of their cleanliness. Some people wash it with shampoo two or three times a day; Some people are used to washing with a lot of shampoo for five to ten minutes; Some people wash it once a day, but they will wash it twice with shampoo at a time. Most of them will also use the little-known high-priced special formula shampoo. However, it is precisely because of the continuous maintenance of hair in a generally rare way that it is easy to have fine hair like cat hair. Many people's hair is therefore inelastic, thin and soft, and suffers from thinning hair. Too much shampoo will really make the scalp thin. When the scalp becomes thinner, the hair will of course become slender and sparse. Why does too much shampoo make the scalp thinner? Because almost all shampoos contain surfactants with strong cleaning effect. This ingredient will destroy the barrier function of the scalp and weaken the metabolism of the scalp. All skin surfaces, including scalp, have a "barrier function" to inhibit the invasion of foreign bodies and prevent the evaporation of moisture inside the skin. This barrier function is composed of not only water-soluble natural moisturizing factors with amino acids as the main component, but also fat-soluble intercellular lipids with ceramide as the main component, which can connect dead keratinocytes with other cells. These two components are like a wall made of bricks and mortar, forming a solid barrier. What can break this solid barrier is the large amount of surfactants contained in shampoo. Surfactants in shampoo will dissolve natural moisturizing factors and oil-soluble intercellular lipids that build barrier function in keratinocytes, making barrier function ineffective. Once the barrier function is lost, it is impossible to keep water, which leads to continuous evaporation of water, so the scalp becomes dry and dry, and cells are difficult to regenerate. It takes three to four days for healthy skin to restore the function of the damaged barrier. Because most Japanese people wash their hair every day, and some even wash it once in the morning and evening, the barrier being restored is destroyed by the washing power of shampoo, making the scalp more and more dry and lack of water. When the scalp surface is in a "desert state", the basal layer that produces cells under the scalp stops metabolism and it is difficult to produce new cells. In other words, because the scalp lacks enough cells, it will lose its thickness and become thinner and thinner. What happens once the scalp becomes thinner? As a result, hair like hair can only grow out, which accelerates the process of baldness. As a plastic surgeon, I often cut off part of patients' scalp during surgery, sometimes I encounter incredibly thin scalp, and even doubt my eyes: "What's going on? Because its thickness is less than half that of the average person. When I meet people with very thin scalp, I will ask them how to maintain their hair. As a result, most people are very careful when washing their hair with shampoo because of their cleanliness. Some people wash it with shampoo two or three times a day; Some people are used to washing with a lot of shampoo for five to ten minutes; Some people wash it once a day, but they will wash it twice with shampoo at a time. Most of them will also use the little-known high-priced special formula shampoo. However, it is precisely because of the continuous maintenance of hair in a generally rare way that it is easy to have fine hair like cat hair. Many people's hair is therefore inelastic, thin and soft, and suffers from thinning hair. Too much shampoo will really make the scalp thin. When the scalp becomes thinner, the hair will of course become slender and sparse. Why does too much shampoo make the scalp thinner? Because almost all shampoos contain surfactants with strong cleaning effect. This ingredient will destroy the barrier function of the scalp and weaken the metabolism of the scalp. All skin surfaces, including scalp, have a "barrier function" to inhibit the invasion of foreign bodies and prevent the evaporation of moisture inside the skin. This barrier function is composed of not only water-soluble natural moisturizing factors with amino acids as the main component, but also fat-soluble intercellular lipids with ceramide as the main component, which can connect dead keratinocytes with other cells. These two components are like a wall made of bricks and mortar, forming a solid barrier. What can break this solid barrier is the large amount of surfactants contained in shampoo. Surfactants in shampoo will dissolve natural moisturizing factors and oil-soluble intercellular lipids that build barrier function in keratinocytes, making barrier function ineffective. Once the barrier function is lost, it is impossible to keep water, which leads to continuous evaporation of water, so the scalp becomes dry and dry, and cells are difficult to regenerate. It takes three to four days for healthy skin to restore the function of the damaged barrier. Because most Japanese people wash their hair every day, and some even wash it once in the morning and evening, the barrier being restored is destroyed by the washing power of shampoo, making the scalp more and more dry and lack of water. When the scalp surface is in a "desert state", the basal layer that produces cells under the scalp stops metabolism and it is difficult to produce new cells. In other words, because the scalp lacks enough cells, it will lose its thickness and become thinner and thinner. What happens once the scalp becomes thinner? As a result, hair like hair can only grow out, which accelerates the process of baldness. How to solve the trouble of washing your hair with water? I'm worried about sticky hair. I finally made up my mind to wash my hair with water, but at first I will go through a period when my hair is sticky, smelly and itchy. Unfortunately, some people return to using shampoo because they can't stand it. However, you can get through this period if you know some tricks. Stop gossiping and let's see how to solve the sticky problem first. When I first stopped using shampoo, the most disturbing thing was the sticky feeling. When you can't stand sticky hair, please don't use shampoo immediately, but wash it with warm water. Or you can wash it twice a day. If you really can't help it, you can also use a very small amount of shampoo or pure soap to wash your hair. Don't be too brave at first, ask yourself, "Never use shampoo! Maybe there will be fewer setbacks. However, please always remind yourself: "The more shampoo you use, the easier it is to secrete a lot of sebum and promote sebaceous gland hypertrophy. Please try to reduce the amount of shampoo used, and the most important thing is persistence. When you really want to use shampoo, please remember one thing: "why do you put this disgusting liquid on your head and let it penetrate into your body to corrode your hair and body?" "In short, if you continue to wash your hair with shampoo, you will never be able to reduce the amount of sebum, and it will be more difficult to eliminate the sticky feeling. The only way to get rid of the sticky feeling is to stop using shampoo. Please keep this in mind. If you really want to use shampoo, please use "pure soap+citric acid" in the initial stage of shampooing with water. Sometimes I really want to use shampoo. Please don't use shampoo in this case, but clean it with pure soap. The surfactant contained in synthetic cleaners such as shampoo is synthesized by chemicals. In contrast, pure soap is mainly made of vegetable oil such as olive oil or coconut oil, palm oil and animal oil such as butter, and caustic soda (sodium hydroxide) is added to make it have the function of surfactant. Pure soap is made of natural raw materials, which is far from synthetic shampoo. The cleaning effect of pure soap is equivalent to or even better than that of synthetic detergent. However, it does not contain any chemicals at all, so it has little cytotoxicity and is safer than synthetic shampoo. Wash it carefully with warm water first to remove the dirt from your hair. Because a small amount of pure soap can generate enough foam to clean the dirt on the hair (just like using synthetic shampoo). As for moistening silk, citric acid sold in pharmacies and other places can be used. Citric acid is a sour component contained in dried plums, lemons and vinegar, which belongs to weak acidity. Like baking soda, they are two treasures of "clean environment" and are often used to clean places that need water, such as kitchens and bathrooms. In addition, when washing clothes with pure soap, adding some citric acid at last can also make the clothes soft. Therefore, citric acid can also be used as a good helper for "environmental protection housework" of soft and exquisite clothes. Because pure soap is alkaline, and the washed hair will also be alkaline, so the use of weakly acidic citric acid can achieve neutralization effect. The preparation method of this moisturizing liquid is very simple. Fill the washbasin with "warm water", then add half a teaspoon of citric acid and stir well. The amount does not need to be too precise, but it tastes slightly sour, not too sour. You might as well remember this trick. After soaking the whole hair with citric acid conditioner, it can be washed off immediately. Because the hair neutralizes as soon as it comes into contact with the citric acid conditioner, it doesn't need to stand for a while, and the stiff hair will be soft enough to be combed with your fingers immediately. This lotion has no pungent smell at all and is simple and easy to use. Although the concentration of the emulsion is quite thin, citric acid is somewhat toxic to the skin, so please be sure to rinse it off. This article is taken from Get rid of shampoo and make your hair healthier! "! Japanese anti-aging doctors teach you the secret of hair care to greatly reduce hair loss and bid farewell to hair troubles! [Revised Edition]/Yujin Mulongyi (professional anti-aging cosmetic plastic surgeon)/Raw water