What it is: A serum primer to plump skin with hydration and skin-care ingredients to smooth the look of fine lines and provide a radiant finish.What it does: The lightweight, serum-gel primer helps instantly plump skin with hydration for a smooth, makeup-ready glow. It works to strengthen the skin's barrier while providing antioxidant and blue-light protection. It is infused with potent skin-care ingredients that work instantly and over time for a youthful radiance even with makeup.Key ingredients:- Hyaluronic acid provides intense and lasting hydration and helps lock in moisture all day- Peptides: help firm and boost skin's bounceHow to use: Apply the serum on clean skin. Wear alone or underneath makeup.