What is the role of preservatives in cosmetics?
What is the role of preservatives in cosmetics? Cosmetic preservatives refer to substances added to cosmetics for the purpose of inhibiting the growth and reproduction of microorganisms in cosmetics. Cosmetic preservatives are classified in different ways. Common cosmetic preservatives are benzyl alcohol, benzoic acid, salicylic acid, boric acid, sorbic acid and other alcohols, aldehydes and other substances.
1, the role of preservatives in cosmetics is mainly to inhibit the growth and reproduction of microorganisms, maintain the stability of the nature of cosmetics, so that it is not easy to deteriorate after use, extend the storage time.
2. Cosmetics with more moisture have a greater demand for preservatives, such as toners, lotions, etc.; The closer it is to ointment or wax cosmetics, the more difficult it is for microorganisms to survive, and the need for preservatives is relatively small.
3, cosmetic production usually uses several preservatives to mix, so as to expand the antibacterial range, improve efficacy, anti-secondary pollution and other effects.
