Although the oil produced by the sebum layer of scalp can protect hair and keep it clean and smooth, the effect is much better than shampoo and conditioner. If you wash your hair every day, it is recommended that you only wash your scalp with hot water when taking a bath, which can fully clean the dirt on your scalp and keep the necessary sebum on your head.

But simply washing with hot water can't make the shampooed hair smooth. The use of shampoo is essential for people who perm and use hair care products. Because if you don't use shampoo, your hair can't stay curly, and hair care products can't be absorbed well. Therefore, for people who want to reduce scalp irritation, the best way is to avoid the scalp and wash their hair with shampoo only.