The production of gray hair is divided into two cases, the first is a natural phenomenon, that is, due to cellular aging, tyrosinase activity is reduced, resulting in a decrease in the synthesis of melanin and thus produce white hair; the second case belongs to the albinism caused by a genetic mutation, due to a genetic mutation so that the cellular enzyme related to melanin can not be synthesized normally, resulting in the inability to produce melanin, so that the patient's hair becomes white.

According to the folklore of washing hair with white vinegar can make gray hair black quickly, the second case is obviously not applicable, so let's discuss in the first case, washing hair with white vinegar is not really can play a magical "light speed black" effect.

The main raw materials of white vinegar are water, rice, edible alcohol, edible salt, rice husk and skin, after brewing in the role of acetic acid bacteria to produce acetic acid, and its specific composition according to the literature: the use of HPLC technology to analyze the white vinegar, know that its composition includes galactose, fructose, fructose sugar and other sugar components, a variety of polyalcohol components, as well as acetic acid, but there is no scientific basis for the composition! But there is no scientific evidence in these ingredients to show which type of ingredients can increase tyrosine activity or generate melanin to achieve the effect of fast gray hair to black.

In fact, regardless of Chinese medicine or Western medicine, gray hair have been studied, Chinese medicine that the human body since the system, so all aspects of the body's appearance is because of internal problems, such as Rao Si, Rao Shen, stay up all night, etc. will cause hair problems; Western medicine that the human body is microscopic to the extreme to the cell as a unit, some of the growth activities are cell metabolism is the main, such as white hair is the chromoblasts have a problem, so by avoiding ultraviolet light to avoid the problem, so the chromoblasts can be used as a cell metabolism. The problem is that by avoiding ultraviolet light and maintaining a nutritious environment, the problem can be lifted.

Therefore, in order to turn gray hair into black, what we should do is to supplement sufficient vitamins, minerals, proteins, amino acids and other nutrients, so that the chromoblast cells become active, from the internal problem, and avoid prolonged exposure to ultraviolet rays on the outside, pay attention to the care of the hair, in order to achieve satisfactory results. Although washing hair with white vinegar can kill seborrheic dermatitis patients scalp of the egg-type chaffeine spores, so as to play a role in stopping itching and dandruff, but for hair whitening is really meaningless, and irritation is greater, easy to cause damage to hair and the normal growth of the hair, so for the dandruff of the crowd of severe dandruff can be used once a week to wash the hair with white vinegar, to play the role of anti-dandruff.

White vinegar hair wash, gray hair to black hair is unfounded, do not blindly believe.