Hydrabio serum adults, teenagers benefits •+176% (1) immediate hydration and 72 hours of effectiveness (2) , thanks to the patented aquagenium+* technology and hyaluronic acid •proven effectiveness in real conditions (pollution, stress, temperature changes) (3) •reinforces the skin barrier protection extremely cool gel texture – absorbed immediately – non-sticky – non-greasy – very good base for make-up very good skin tolerance. does not cause blackheads – suitable for all skin types inspired by biodermas eco-biological approach, hydrabio sérum helps dehydrated skin restore its natural hydration mechanisms and maintain its long-term balance. its formula offers a dual action, targeting both the causes and the consequences of dehydration: 1. reactivates natural hydration mechanisms the patented aquagenium+* technology helps stimulate aquaporins to restore hydration flow, while hyaluronic acid and glycerin help the skin capture and retain water. 2. strengthens the skin barrier niacinamide promotes lipid synthesis to strengthen the skins protective function. a prebiotic sugar supports the microbiome, which is essential for long-term hydration balance. hydrated and strengthened, the skin regains comfort, radiance and the ability to face daily challenges. morning and/or evening - 7 days a week step 1cleanse your skin ideally with the hydrabio cleanser. step 2use before your daily skincare product. step 3apply morning and/or evening to face, neck and décolleté. step 4gently massage until absorbed.