Scalp is a part of body skin, which secretes a lot of sebum. Sebum is an oil stain, but it also protects the scalp. Washing your hair only with warm water can prevent washing off too much sebum and keep your scalp healthy.

However, if people with more sebum secretion only wash their hair with warm water, it will make sebum surplus and cause scalp pores to be blocked. Therefore, if the scalp secretes more sebum than the average person, it is best to wash your hair with shampoo.

Extended data:

Too frequent shampooing is not only bad for the metabolism of scalp epidermis, but also harmful to stratum corneum, which has a protective effect on scalp. At the same time, too frequent shampooing will make sebaceous glands receive the information of oil shortage, and then further secrete oil, making hair more and more oily.

Therefore, the frequency of shampoo depends on the season and hair quality. Generally speaking, people with oily hair can wash their hair/kloc-0 times a day, but it is not necessary to use shampoo every time. People with neutral or dry hair can adjust their hair washing frequency to 3~4 times a week, and they can also wash their hair/kloc-0 times a day in summer.

People's Network-Hair needs daily cleaning.

Japanese media exposure is risky without washing your hair and sleeping.