Who: for all skin types. What: a serum to help brighten, firm and Rejuvenating the skin. This serum deeply moisturizes and can be applied to the face, neck and décolleté. How: Vitamin C provides the skin with effective protection against aging as the basis for the formation and transfer of collagen into the dermis (inner skin). It has antioxidant properties and plays an important role in reducing pigment spots. The use of a suitable antioxidant such as vitamin C is therefore essential to minimize visible signs of aging.