What are the common ingredients used in cosmetics . What is the role

Cosmetics are composed of a matrix plus others such as antioxidants, preservatives, fragrances, surfactants, moisturizers, pigments and skin penetrants. Matrix raw materials are mainly oily raw materials, including oils and fats, waxes, hydrocarbons, as well as the composition of these ingredients advanced fatty acids, advanced alcohols. In order to prevent cosmetic oils, waxes, hydrocarbons and other oily ingredients from coming into contact with oxygen in the air, oxidation occurs, resulting in peroxides, aldehydes, acids, etc., so that cosmetic discoloration, rancidity, quality degradation, it is necessary to add antioxidants to the cosmetic products, and the commonly used antioxidants are tocopherol, tertiary butylhydroxycumin, tertiary butylhydroxytoluene, and propyl gallate, and so on. Preservatives are nipagin esters such as nipagin methyl ester, ethyl ester, propyl ester, butyl ester and benzyl ester and so on. Emulsifiers commonly used in cosmetics are mainly ionic and non-ionic. Moisturizers include glycerin, propylene glycol, sorbitol, sodium lactate, and so on. In addition, skin penetrating agents, such as nitrogen ketone, can be added in moderation to help skin absorption.