Inspired by NAOS ​​pioneering approach to ecobiology and thanks to its understanding of the biological dysfunction responsible for dehydration, Hydrabio Hyalu+ serum allows the skin to reactivate its natural hydration mechanisms and retain the water essential for its balance. The complementary action of correctly dosed active ingredients: biomimetic low molecular weight (LMW) hyaluronic acid , niacinamide, carnosine and Hyalu+ technology (a combination of biomimetic high molecular weight (HMW) hyaluronic acid and a hydrating sugar) act on the internal causes of dehydration and visible signs, to provide long-lasting effectiveness. Immediate hydrating and plumping action: HMW Hyaluronic Acid that creates a film on the surface, preventing water loss, plus a new hydrating sugar that helps the skin synthesize and retain Hyaluronic Acid. A toning action based on LMW hyaluronic acid, which helps stimulate collagen to gain firmness and elasticity. A firming action via Niacinamide, which strengthens the barrier function to reduce dehydration. FUNCTION Provides long-lasting relief. Helps slow down premature aging of sensitive skin. INSTRUCTIONS FOR USE Apply morning and evening to cleansed face and neck.