POPMEOUT Brightening Maestro ( Alpha Arbutin Serum )Ingredients: Sodium hyaluronate, Alpha Arbutin 1% , Glycerol propanetriol, Propylene Glycol,Phenoxyethanol, Ethyl hexyl glycerine, Aqua What is Alpha Arbutin ? rbutin is a naturally occurring substance found in plants such as Bearberry, Cranberry and Mulberry that inhibits the development of melanin (the pigment that creates skin colour). Alpha Arbutin is a chemically synthesised variant of plant extract used as a topical skin brightening agent to