Facial cleanser is a cleansing cosmetic with the purpose of removing dirt from the skin, refreshing the skin and helping to maintain the normal physiological state of the skin. When the facial cleanser cleans the skin, the object to be cleaned (ie, the substrate) is human skin, and the dirt adhering thereto is basically sebum and stratum corneum fragments and oxidative decomposition products (dirt), or a cosmetic product adhered thereto. the remains. These residual metabolites are unstable and can react with oxygen in the air, or from deposited molecules. When exposed to sunlight or bacteria on the skin, various physicochemical and biochemical reactions occur to form substances that may harm the skin. Thus, 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 cleanser must be considered