CAS: 84380-01-8 INCI: Alpha Arbutin Chemical Structure: * Alpha arbutin is a glycosylated hydroquinone, and its chemical name is 4-[(1R)-2,4-dihydroxy-3-methylbutyl]phenyl β-D-glucopyranoside. * The chemical formula is C12H16O7. Natural Source: * Alpha arbutin is derived from the bearberry plant (Arctostaphylos uva-ursi), as well as some other plants like cranberries, blueberries, and pear skins. * It is a more stable form of arbutin compared to beta arbutin. Skin-Brightening Properties: * Alpha arbutin is known for its skin-brightening and lightening properties. It works by inhibiting the activity of tyrosinase, an enzyme involved in the production of melanin (the pigment responsible for skin color).