La Roche-Posay Hyalu B5 Serum is a 30ml facial serum designed to provide intensive hydration and support the skin barrier. The formula features a combination of hyaluronic acid, which acts as a hydrating agent to improve skin elasticity, and vitamin B5, also known as panthenol, to assist in skin renewal. Additionally, the serum contains La Roche-Posay thermal water to soothe the skin. This lightweight, non-greasy product is free from fragrances, parabens, and mineral oils, making it suitable for all skin types, including sensitive skin. To use, apply a small amount to clean, dry skin in the morning and evening, massaging gently until absorbed. This serum aims to help maintain skin moisture, support the skin barrier against environmental factors, and promote a smoother appearance for users seeking a daily facial care solution.