La Roche-Posay Hyalu B5 Serum is an advanced anti-aging formula combining hyaluronic acid and vitamin B5 to provide intense hydration and reduce wrinkles. This lightweight serum helps plump skin, improve elasticity, and deliver long-lasting moisture for a more youthful appearance. This dermatologically-tested serum contains two types of hyaluronic acid molecules - larger ones that work on the surface for immediate plumping effects and smaller ones that penetrate deeper layers for long-term hydration. The formula is suitable for all skin types including sensitive skin, and is free from parabens. For best results, apply morning and evening before moisturizer. The serum is hypoallergenic, non-comedogenic and has been clinically tested to improve skin elasticity and reduce the appearance of wrinkles with regular use.