WHAT IS IT?

Vitamin C Ester is a unique combination of L-ascorbic acid (traditional vitamin C) and palmitic acid, a fatty acid derived from palm oil. That combination is what makes the difference: unlike traditional vitamin C, which is water-soluble, Vitamin C Ester is fat-soluble, allowing it to penetrate skin more easily and resist the breakdown that plagues most vitamin C formulas.

Traditional vitamin C is notoriously difficult to formulate with — it's acidic, prone to irritation, and loses potency quickly once a product is opened, often within six months. Dr. Perricone developed Vitamin C Ester specifically to solve this: all of the brightening, antioxidant, and collagen-supporting benefits of vitamin C, in a form skin can actually use.

Vitamin C Ester is one of Perricone MD's five Signature Sciences — ingredients Dr. Perricone identified for their proven ability to visibly transform how skin looks and feels.