Girls had better wash their hair several times a week.

In hot summer, it is recommended that girls wash it three or four times a week. Even if the hair is easy to get oily, it is best to wash it every other day. If you wash your hair often, it will stimulate the sebaceous glands of the scalp to secrete oil continuously, and excessive cleaning will lead to excessive oil secretion. In addition, you should pay attention to the choice of shampoo when washing your hair, and avoid using shampoo that is too alkaline.