First, the cleaning function, the face is exposed to the air every day, and it is exposed to more dust. There is oily skin and greasy face. They simply wash their faces with clean water, but they can't wash them clean. Washing your face with facial cleanser or soap can remove dust and grease and play a good cleaning role; Second, inhibit the growth of microorganisms. There are some bacteria, fungi and mites on the face. Facial cleanser and soap are both alkaline detergents. Washing your face often with soap can inhibit the growth of facial microorganisms. At present, there are many kinds of facial cleanser on the market, such as whitening, exfoliating, scrubbing and acne removal. Let consumers see things in a blur. In fact, it is just an advertisement made by merchants to sell and promote products. It is most important for you to choose a facial cleanser or soap that suits you. Each of us has different skin characteristics, so don't let others flaunt which one is good. It's best to buy it yourself and try it yourself. What suits you is the best.