Stimulate collagen synthesis & boost elasticity of skin with the Theorem Repair Light Serum from 111SKIN, a brand who created the patented NAC Y2 formula using knowledge from space scientists responsible for the well-being of astronauts. Skin ages faster in space because of environmental extremes, including radiation, pollution & high altitude, which inspired the production of the brand's anti-ageing range to protect skin from external stresses. Suitable for oily skin, the luxurious serum is enriched with calendula plant extracts that possess powerful healing properties & contains the highest strength NAC Y2 formula with vital amino acids that work to support cell regeneration. Visibly reduces the appearance of fine lines & wrinkles by intensely hydrating skin & protecting skin from environmental aggressors to leave you with a radiant, youthful-looking complexion. E.N. Paraben, paraffin, silicone & sulphate free.