The Inkey List Q10 Serum is an antioxidant that works to protect your skin, hydrate it, and target signs of aging. The Inkey List Q10 Serum is an antioxidant that works to protect your skin, hydrate it, and target signs of aging. Working in the upper layers of the skin, Q10 is a powerful antioxidant that helps to protect your skin from environmental stress. With an added Syn -Tacks dual peptide and Squalane, this light, hydrating serum also helps to reduce the appearance of fine lines and wrinkles.