Stimulate collagen synthesis and boost elasticity of skin with the Theorem Repair 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 and high altitude, which inspired the production of the brand’s anti-ageing range to protect skin from external stresses. Formulated with calendula plant extracts that possess powerful healing properties, the luxurious serum contains the highest strength NAC Y2 formula with vital amino acids that work to support cell regeneration to give you smoother, younger-looking skin. Visibly reduces the appearance of fine lines and wrinkles by intensely hydrating skin and protecting skin from environmental aggressors to leave you with a radiant complexion. Paraben, paraffin, silicone and sulphate free.