The more dandruff there is, and if you don't wash it for two or three days, the itching is unbearable. The reason is that they do not know the nature of their hair.
So it backfired.
Too frequent shampooing will destroy the protective film formed by sebaceous glands accumulated on the hair and wash away some useful substances. Repeated shampooing like this promotes metabolism, but too fast metabolism will also increase dandruff.
Whether it is oily hair, sandy hair or soft hair, different shampooing methods and times should be adopted according to their properties. It is advisable to wash oily hair every 5-6 days. Dry hair, that is, sofa and soft hair, should be washed once every 7-8 days (spring and autumn). If you wash your hair too often, it will make your hair brittle and dry, and sometimes it will look yellow and dull. This is because dry hair is congenitally deficient.
Lack of oil, the result of frequent washing is to completely wash away the little oil in your hair. Hair becomes dry and burnt because it has not been nourished by its own oil for a long time. This kind of hair can be washed every 5-6 days in summer and even every 10 day in winter. Rub some hair oil to protect your hair after washing.