Additionally, the Sesderma C-vit serum boosts collagen synthesis. Vitamin C is an essential cofactor for collagen production, the protein that gives skin its firmness and elasticity. With regular use, this dermatologist vitamin C serum helps improve skin texture, smooth out wrinkles and restore a youthful plumpness . Thanks to its liposomal delivery system, a nanotechnology developed by Sesderma's R+D department in Spain, the vitamin C penetrates deep into the skin for maximum effectiveness,