洗面奶是采用洗涤的方式清洁人体面部皮肤的乳液状产品。它可以去除皮肤表而附着的皮脂、角质层屑片、汗液等皮肤生理代谢产物以及灰尘、微生物、使用的化妆品残留物等。油脂、水及表面活性剂是构成洗面奶的最基本的成分。洗面奶产品为水包油型乳液,其去污、清洁作用包括两个方面:一是借助于表面活性剂 Facial cleanser is a cleansing product that cleans human facial skin with a washing method. It can remove the skin surface attached to the sebum, cuticle pieces, sweat and other skin physiological metabolites and dust, microorganisms, the use of cosmetics residues. Fat, water and surfactant constitute the most basic ingredients of facial cleanser. Cleanser products for the oil-in-water emulsion, the decontamination, cleaning effects include two aspects: First, with the help of surfactants