Licorice is one of the most widely used traditional Chinese medicines in clinic. It is not only a good natural herbal medicinal plant, but also a good cosmetic additive. In particular, some bioactive substances and functional components extracted from licorice are good cosmetic additives and important raw materials for skin whitening and sunscreen.

    There are experimental findingsGlycyrrhizinIt has certain functions and effects in skin beauty. It has certain antibacterial, anti-inflammatory, pigmentation and rough skin effects caused by ultraviolet rays. It can also effectively remove superoxide anion free radicals and inhibit aging damage of skin caused by lipid peroxidation. In addition, experiments have shown that 0.001-0.1% of glycyrrhizin in skin whitening cosmetics or essence basically does not produce obvious side effects, indicating that glycyrrhizin is basically safe to use in beauty cosmetics. As a good skin whitening and sunscreen ingredient, glycyrrhizin has been modified or wrapped with liposomes compounded with phospholipids and cholesterol, which not only greatly enhances its percutaneous absorption capacity, but also has fine and high dispersion of glycyrrhizin particles. Once it passes through the epidermal stratum corneum, it can change the polarity of lipid transport on the scalp at the same time, increase the transport of Glycyrrhizin to the basal cell layer, and greatly improve its bioavailability. It can maximize its biological effect on the "three enzymes and one element" that leads to the deepening of skin pigment, reduce the production of skin pigment, and significantly inhibit the pigmentation, so that the dark skin surface appears white and white.

    Therefore, applying glycyrrhizin or Glycyrrhiza uralensis extract to skin beauty cosmetics can not only whiten, but also protect the skin from sun, which is in line with the popular law and development trend of the integration of whitening and sun protection in the future. It is believed that more beauty cosmetics containing Glycyrrhiza uralensis extract or chemical compounds will come out in the near future, making a positive contribution to people's skin whitening and protection.