Phyto-C Skin Care specializes in antioxidant skin care products formulated by Dr. Mostafa Omar, the father of L-Ascorbic Acid, to enhance skin health and alleviate common dermatological conditions. All formulations have been studied and tested for over 5 years with grants supported from the National Cancer Institute and the National Institute of Health. https://www.phyto-c.com/collections/best-vitamin-c-serum-for-oily-skin