BIODERMA Hydrabio tonic Toning and hydrating lotion Dehydrated sensitive skin Tones, restores brightness No rinsing Paraben free, hypoallergenic 250m Every day pollution, stress and cold interfere with the cellular activity of the skin, causing a loss of hydration and luminosity. Born from BIODERMA research, the Aquagenium biological patent, contained in Hydrabio Lotion Tonique, helps to reactivate the natural process of skin hydration, stimulating the synthesis of aquaporins, channel proteins of the epidermis - and to retain the water essential for its balance.