Dermalogica Circular Hydration Serum is a kick-start skin’s hydration cycle: long-lasting serum immediately floods skin with hydration, replenishes from within, and helps prevent future hydration evaporation. Full-circle hydrating serum utilizes an enhanced form of Hyaluronic Acid to penetrate the skin’s surface for deep hydration and more supple, radiant skin over time. An Algae Extract-infused moisturizing matrix delivers quick and long-lasting hydration. Polyglutamic Acid from Dermalogica Circular Hydration Serum fermented Soy replenishes skin’s hydration reserves. Plant-derived sugars and a blend of amino acids similar to those naturally present in the skin trap water on the skin’s surface to help prevent future hydration evaporation. A postbiotic blend of Lactobacillus Ferment and Avena Extract helps to balance the skin’s microbiome.