Vitamin A is essential for the maintenance and development of epithelial structures. The retinol keeps the skin intact and repairs the damaged cells. Vitamin A cosmetics are, in fact, very useful in case of cracked, reddish and irritated skin. They also perform a sebo-regulating action, that is, they give balance to the production of skin sebum.
The natural acidity that characterizes Vitamin C – also called ascorbic acid – serves to accelerate the cell turnover, as it stimulates the skin in the deep layers, favoring the elimination of dead cells present on the surface.