Alpha Arbutin Refine by Active Ingredient: Alpha Arbutin Product Type. Serums Refine by Product Type: Serums Sets Vitamin C is a well-known antioxidant used in skincare to target signs of aging by balancing uneven skin tone. The Ordinary offers Vitamin C in its direct form (l-ascorbic acid), and in its indirect form (e.g. ascorbyl glucoside XpRw.

alpha arbutin and vitamin c