Ideal for dry, sensitive skin types, the Bioderma Hydrabio Hyalu Plumping Hydrating Serum locks in moisture and visibly smooths the skin. Developed with low and high molecular weights of hyaluronic acid, the serum helps to plump the look of the skin, encouraging a noticeably firmer finish with fewer fine lines. Exopolysaccharides support long-lasting hydration, while niacinamide promotes a brightened, more unified appearance over time.