Bioderma Hydrabio Hyalu+ Sérum Rehydrates and fills immediately and lastingly Reduces visible signs of aging Strengthens the skin barrier Protects from oxidative stress Inspired by the pioneering approach of NAOS ecobiology, and thanks to its understanding of the biological dysfunction responsible for dehydration, the Hydrabio Hyalu+ serum empowers the skin to reactivate its natural hydration mechanisms and retain the water essential to its balance. The complementary action of active ingredients in the right dose: low molecular weight biomimetic Hyaluronic Acid (BPM), Niacinamide, Carnosine and Hyalu+ Technology (combination of high molecular weight biomimetic Hyaluronic Acid (APM) and a self-rehydrating sugar) act on the causes internal dehydration and visible signs of aging to provide long-lasting effectiveness. •An immediate moisturizing and plumping action: APM Hyaluronic Acid that creates a film on the surface, preventing water loss, in addition to a new self-rehydrating sugar that helps the skin to synthesize and preserve Hyaluronic Acid. •Toning action with BPM Hyaluronic Acid, which helps stimulate collagen to gain firmness and elasticity. •Strengthening action with Niacinamide, which consolidates the barrier function to reduce dehydration.