Ulta DERMA E  Vitamin C Concentrated Antioxidant Serum Mini

C the glow with DERMA E's pure, potent, and clinically-proven Vitamin C Concentrated Serum. It melts deep into cells to improve overall skin health with a unique formula that has two types of Vitamin C, including C-Ester, which has 8x the Vitamin C compared to L-Ascorbic Acid found in other brands.