Insìum Triple Antioxidant Serum is an intensive anti-aging treatment based on pure vitamin C , ferulic acid and lactobionic acid , activated at the time of use to ensure maximum effectiveness. It brightens the skin, reduces fine lines and evens out the complexion. Also suitable for sensitive skin, it is ideal for the face, eye contour, lips, neck and décolleté. The package includes 4 vials of 7 ml to be used within a week of activation.