Licorice Root Extract
Glycyrrhiza Glabra Root Extract is derived from the licorice plant, a legume native to the Mediterranean Sea, the Middle East, and central and southern Russia. Its key active components include glabridin, which is responsible for depigmenting and antioxidant properties, and glycyrrhizin, which provides anti-inflammatory activity. The concentration of glabridin in commercial extracts can vary widely, ranging from approximately 4% to 40%, which significantly affects efficacy. It is considered one of the safest skin-lightening agents with few reported side effects.
Licorice root extract has demonstrated depigmenting properties, with topical application of 0.5% glabridin shown to inhibit UVB-induced pigmentation; one study suggested it may be more effective than hydroquinone. It also acts as a potent anti-inflammatory, used to help manage skin conditions such as atopic dermatitis, rosacea, and eczema. Additionally, glabridin exhibits antioxidant activity, providing further skin-protective benefits.
Efficacy for depigmentation depends heavily on the concentration of glabridin in the specific extract used; commercial extracts vary widely (4%–40% glabridin), so product quality matters. No specific contraindications are mentioned in the source.
