Working to quench the complexion and give skin a bouncy texture, the Hyalu B5 Pure Hyaluronic Acid Serum for Face, with Vitamin B5 by La Roche-Posay provides instant hydration. The hyaluronic acid serum seeks to minimise and soften the look of fine lines, plumping the skin with moisture to promote suppleness. Two different sizes of hyaluronic acid work to provide intense hydration, while vitamin B5 helps the skin defend against external aggressors.