What It Is:A custom blend formula with optimal concentration of low and high weighted hyaluronic acid molecules that bind moisture and replenish skin, providing long-term hydration and more supple-looking skin.What It Does:When used regularly, this serum is an effective means of reducing the look of wrinkles caused by dehydration. Short-chain molecules are able to penetrate into the skin and replenish moisture reservoirs for the long term. Long-chain hyaluronic molecules provide immediate intensive hydration to the surface layers of the skin to give a refreshing effect. Key Ingredients:- Custom-blended Hyaluronic Acid: A Dr. Sturm proprietary formulation of long and short chain hyaluronic molecules for intense, long-term hydration with a plumping effect; this serum is tested and proven to have the optimal concentration and viscosity to penetrate the skin.- Purslane: A strong antioxidant with high levels of vitamins A, C, E and omega-3 fatty acids, it supports skin health and reduces the visible signs of irritation.How To Use It: Squeeze a full pipette in the palm of your hand and apply it evenly to your face before gently patting it in. Wait 30 seconds for the serum to absorb before applying the Face Cream.