Cosmetics are substances or products used to enhance or alter the appearance of the face or fragrance and texture of the body.metics are substances or products used to enhance or alter the appearance of the face or fragrance and texture of the body. Many cosmetics are designed for use of applying to the face and body. They are generallmetics are substances or products used to enhance or alter the appearance of the face or fragrance and texture of the body. Many cosmetics are designed for use of applying to the face and body. Many cosmetics are designed for use of applying to the face and body. They are generally mixtures of chemical compounds derived from natural sources, or may be synthetic or a