Hydrabio Sérum is a 72-hour moisturising booster. Its hydro-active formula continuously moisturises the skin intensely to cope with daily challenges (hot/cold weather, pollution, stress, sport ...) while strengthening it. The Aquagenium+ patented complex, inspired by our unique NAOS Ecobiology approach, helps the skin reactivate its natural moisturisation mechanisms by stimulating the circulation of water. Hyaluronic acid maximises water reserves. Niacinamide and FOS (prebiotic sugar) strengthen the skin barrier. Light, fresh gel texture. Non-sticky, non-greasy. Fragranced. Dermatologically tested. Proven efficacy: * Moisturises +176% immediately * Strengthens the skin barrier * Revitalises