Lierac Hydragenist- The Rehydrating Radiance serum is expertly formulated to instantly hydrate and plump the skin and provide radiance. Composed of 96% of natural-origin ingredients enriched with dual-action technology that provides a long-term hydrating action thanks to a unique rehydrating ferment that lastingly boosts the skins natural hydration mechanisms and an immediate hydrating action thanks to high molecular weight hyaluronic acid, which leaves all skin types comfortable and radiant, even the thirstiest. A mesh of 3 hygroscopic biopolymers, it offers a dual action for optimal hydration. It limits the evaporation of water by forming a protective film on the skins surface, helping to maintain its natural hydration and gradually releases a cocktail of hydrating molecules into the skin to continuously hydrate throughout the day. Rehydrating ferment is 100% natural-origin rehydrating ferment comes from the fermentation of an extremophile plankton that lives in the Rio Tinto, a river that is an extreme environment. It boosts the skins 3 key self-hydration mechanisms: it replenishes the skins water reserves, stimulates the circulation of water within the cells and limits its evaporation, providing the skin with long-lasting hydration. High molecular weight hyaluronic acid maintains the balance of water in the skin as it is highly hygroscopic. It also intensely plumps the skin, provides it with immediate comfort and smooths dehydration lines. Lierac Hydragenist- The Rehydrating Radiance serum is a real hydration infusion for the skin. Its water-saturated texture instantly refreshes and quenches the skin provides intense radiance.