Collagen facial serum from Medisei, suitable for all skin types. A key structural component of the skin, collagen protects the skin from the absorption and spread of pathogenic substances, such as toxins and microorganisms. It provides firmness to the skin, helps with anti-aging and reduces fine lines. Due to its composition, the serum is quickly absorbed and penetrates deeper into the skin compared to face creams, providing a tightening effect.