L-Arbutin, originally derived from the Bearberry Bush, is extremely effective as a skin brightener. It reduces the appearance of dark spots or patches known as hyperpigmentation and evens coloration. Melanin production, stimulated by UV light exposure, hormonal shifts and other factors, manifests itself by darkening the skin. In the summer, we recognize this as sun tan. As we age, the cells producing melanin become less evenly dispersed in the skin so that when melanin is produced, the result may be spots or patches. L-Arbutin, when applied to spots or evenly across a surface area, works to suppress melanin (brown pigment) production. The result is a more even skin tone and a reduction in brown spots and patches.