The formation of melanin particles is usually related to diseases and human aging, and there is no scientific basis for treating white hair with rice washing water. White hair is mainly due to the formation of melanin particles in papillae and hair balls. Or there is a problem in the transportation process, resulting in the melanin particles can not be transported to the hair shaft normally. The decrease of melanin particles in hair cortex and medulla may lead to hair whitening and pigment disappearance.

When white hair first appeared, most people pulled it out by hand:

When I can't pull it out, I have to give up, so I feel that my hair is getting whiter and whiter because of pulling white hair, so I have the saying that "pulling one grows ten."

This statement makes friends who have just discovered white hair very entangled. They dare not pull it out easily, and they are reluctant to dye their hair for dozens of white hairs.

Under normal circumstances, the number of scalp hair has been set at birth, about 654.38+ million hair follicles. With the increase of age and scalp surface area, the density of hair follicles will decrease.

The density of newborns is per square centimeter 1 135, and then gradually decreases, reaching 6 15 per square centimeter at the age of 20-30, 485 per square centimeter at the age of 30-50, and only 435 per square centimeter at the age of 70-80. At this point, the naked eye will see sparse hair.

Therefore, it is not correct to pull out one long ten. However, forcibly plucking white hair will not make it grow longer and more, but it will hurt the hair roots, especially? If the hair is pulled out too much, it may also cause folliculitis, especially in the case of unhealthy scalp. Cases of furuncle after pulling out are common in clinic.