Vitamin C serum is only as good as its formulation, so we chose ascorbyl glucoside, a highly stable vitamin C analogue, for ours—it converts to active L-ascorbic glucoside as soon as it hits your skin so you’re always getting a potent dose of antioxidants. While Epidermal Growth Factor (EGF) stimulates collagen and elastin production deep within the skin's matrix, vitamin C works on the surface for a brighter, more even complexion. Buffered by hyaluronic acid so it hydrates as it lightens dark marks, daily use delivers a concentrated dose of actives to dull, stressed out skin.