Licorice is one of the most popular medicinal herbs. It is a root of Glycyrrhiza glabra and it has a sweet taste. Licorice has been widely used in food, cosmetics, and the pharmaceutical industries. Especially in traditional Korean medicine, it has been considered as indispensable because it neutralizes the bitter taste of medicines. In the cosmetic industry, it is well known to have skin brightening effect. We, GNS, also confirmed its skin brightening as well as anti-microbial effects from in vitro tests, proving its potential to be used in a skin care products.