Azelaic Acid has antibacterial properties and can be used as a food preservative. Use in mouthwashes is conducive to the prevention and treatment of dental caries, and use in soap can prevent the surface of soap from cracking. It has good permeability to the skin, and it can increase the absorption function of the skin when used in cream cosmetics. Azelaic Acid has a variety of medicinal effects and can be used in skin plasters. It has skin lightening and whitening functions.