1, 2-hexadiol is a kind of polyol, colorless and transparent in appearance, with mild sweet flavor. As a cosmetic raw material, it has a good bactericidal and moisturizing effect (antibacterial mechanism: it can enter the cell membrane of microorganisms, then destroy the integrity of the cell membrane, let the cell fluid penetrate out, and finally lead to the death of microorganisms). At the same time, it has no sensitive side effects on human skin. It is precisely because 1, 2-hexadiol has antibacterial effects and is not on the list of preservatives that it is often used as an alternative preservative in non-preservative systems. Step 1 Moisturize Kong Qiucan et al. studied the moisturizing effect of 1, 2-hexanediol. The moisturizing effect of 0.5% 1, 2-hexanediol is slightly better than 3.0% glycerol, which has a very good moisturizing effect. Moreover, the viscosity of 1, 2-hexanediol is lower than glycerol, and it has…