Rinse with warm water for more than one minute before shampooing, and then use shampoo after taking it out. Comb your hair with a wet comb before washing your hair, so that dirt and dust attached to your scalp can float on the surface, so that you can wash your scalp and hair at the same time.

In order to avoid hurting the scalp, it is recommended to use a comb with wide teeth and round head.