This repair serum heals skin from daily aggressors, and boosts collagen, elasticity and volume for radiant, youthful skin. Created in collaboration with space scientists responsible for protecting astronauts from the extreme aging effects of radiation and zero gravity, this revolutionary formula offers unprecedented protection against environmental damage and potent healing. The unique patented NAC Y2 formula is a trio of peptides and antioxidants proven to delay aging. - NAC is an amino acid that encourages collagen production, improves elasticity, and repairs the skin. - Ascorbyl Phosphate is the most potent derivative of vitamin C that fights free radicals and brightens the complexion. . - Escin is a group of antioxidants that transports the NAC and vitamin C directly to the deep layers of the skin for cell renewal and regeneration. - Calendula heals and soothes.