This ultra-potent, antioxidant-rich serum features our proprietary Vitamin C Ester along with two additional forms of vitamin C, delivering our highest concentration at 20%. Combined with vitamin E and ferulic acid, it helps visibly brighten, smooth, and reduce the appearance of discoloration and dark spots over time. Formulated with a powerful phospholipid delivery system, it penetrates the deepest layer of the skins surface for maximum results.