THE INKEY LIST™ Collagen Peptide Serum visibly plumps the skin. This lightweight serum offers intense hydration and diminishes the appearance of fine lines. Powered by a Matrixyl 3000™ peptide, it mimics the skin-smoothing effects of collagen for a firmer look. Enhanced with a dual Syn®-Tacks peptide, the formula preps the skin, supports suppleness, and delivers a soft result.