Alpha-Arbutin is a pure biosynthetic ingredient. It is water soluble and comes in a powder form. It is considered one of the most advanced skin lightening ingredients on the market, and works on all skin types. It is considered safer then other lightening ingredients because it suppresses unwanted pigmentation rather then damaging or killing the pigment producing cells (ingredients that do this can be considered toxic) Alpha Arbutin Skin Whitening Serum