Facial cleanser introduction

It is used to remove dirt from the surface of facial skin, keep the skin fresh and comfortable, and help maintain the normal physiological function of the skin. It is usually the first step in the skin care process.
When facial cleanser cleanses the skin, the object (i.e., the matrix) to be cleaned is human skin, and the dirt adhering to it is basically sebum and stratum corneum fragments and their oxidative decomposition products (dirt), or the residues of beauty cosmetics that stick to it. These residual metabolites are unstable and can react with oxygen in the air or deposited molecules. When exposed to sunlight or the presence of bacteria on the skin, various physical, chemical and biochemical reactions will occur, forming some substances that may harm the skin. Therefore, even for healthy skin, skin cleansing is a necessary process for skin care. In addition, for sensitive or fragile skin, due to its characteristics, special cleaning and care are needed. For problematic skin types, the mildness and safety of facial cleansers must be considered.