Description - Alpha-arbutin (4-Hydroxyphenyl,α-D-glucopyranoside) is a synthetic and functional active ingredient for skin lightening. Biosynthetic ingredient, derived from bearberry. Stable in the pH range from 5-7.  
Benefits - 
Promotes skin lightening and an even skin tone on all skin types
Reduces the degree of skin tanning after UV exposure
Helps to minimize the appearance of liver spots
Use - Recommended concentration 0.2-2%, add to water phase of formula, best results use product containing alpha-arbutin for at least 2-3 months. Add to formula at temperature <40oC (104oF). Ideal pH range 5-7. For external use only.
Applications - All kinds of skin-lightening products including lotions, creams, makeup products.
Solubility - Water-soluble