People didn't know much about soap before. Soap came from abroad, mainly from the United States and Britain. Soap is not a miracle now, and domestic soap is also very good. For example, Naichio, a beauty salon brand, is a kind of weakly acidic soap, which is much better than most alkaline soaps on the market. My skin is oily. After using it for 2 months, the skin is no longer oily.