The therapeutic foundation of the entire procedure is vitamin C in the form of ascorbyl tetraisopalmitate (4%), and L-ascorbic acid (15%) in combination with ferulic acid (1%). Vitamin C exhibits independent antioxidant properties, as well as regenerates vitamin E found in all skin cells, enhancing its repair and photoprotective system. It is an essential vitamin for the production of collagen and elastin, which is why it thickens the skin, inhibits the activity of tyrosinase, reducing discoloration, and strengthens blood vessels.