One of the most widely used and scientifically validated botanicals in skincare, Licorice Root (Glycyrrhiza glabra) has been a mainstay in traditional medicine across Asia, Europe, and the Middle East for thousands of years. Its root contains glabridin and glabrene, bioactive flavonoids that are among nature's most potent tyrosinase inhibitors—making licorice a powerful brightening agent. Its strong antioxidant action neutralizes free radicals, while its well-documented anti-inflammatory properties soothe the burning, itching, and redness of vulvar dermatitis and eczema.

Perhaps most crucially, in the context of traditional Chinese formulation, licorice serves as the "harmonizer"—the envoy that reduces the potential for irritation from other actives, ensuring that the entire Yu Rong San™ herbal complex is safe and gentle enough for the highly sensitive intimate mucosa. It is the quiet anchor of the formula, embodying the holistic principle of balanced care.