The future of retinol is here. This ultra-concentrated, potent night serum helps you get the most out of retinol. It is expertly engineered for optimized surface release of retinol to help improve the look of fine lines, wrinkles, skin tone and texture for smoother, visibly healthier, youthful-looking skin. Skin barrier-strengthening Nia-114 (StriVectin's patented form of niacin clinically shown to enhance the efficacy of retinol) minimizes sensitivity while moisture-binding polyglutamic acid helps counteract retinol's drying side effects. Calibrated for comfortable delivery of retinol, this silky, lightweight serum layers easily into any routine.