Renowned dermatologist Gary Goldfaden, M.D., has developed novel solutions for the most common skin problems encountered by maturing adults. Based on extensive clinical testing, these formulas are designed with potent antioxidant tea extracts (red, green and white) to correct specific areas of concern, such as the appearance of darkness and puffiness under the eyes, fine lines, rough skin, loose skin and more. These products can be used in conjunction with any other skin treatments or products. They are specially formulated exclusively for Life Extension.Vitamin C Serum rejuvenates and protects stressed skin. The potent 12% concentration of vitamin C improves the brightness, tone and texture of dehydrated skin. This special blend of vitamin C and concentrated tea extracts also includes important antioxidants. Vitamin C Serum also intensively hydrates skin.