The La Roche-Posay Hyalu B5 Hyaluronic Acid Moisturiser Serum is a 30ml facial serum specifically designed for hydration. It contains hyaluronic acid as its active ingredient, providing deep and long-lasting moisture to the skin. With a formulation of a serum, it is easily absorbed and perfect for daily use. Ideal for anti-ageing skincare routines, this product from La Roche-Posay is a must-have for those looking to improve the hydration and overall appearance of their skin.