Product details:Having spent two decades in the surgical industry, 111Skin founder Dr Yannis is now turning his expertise to the best complexion remedies in the bizz. The original product and the inspiration behind the entire label’s range, this Y Theorem Repair Serum harnesses the unique NAC Y2 formula to combat signs of stress and reduce the appearance of fine lines. The secret ingredient? Collagen – boosting the surface’s elasticity and drenching it with hydration.111SKIN Y Theorem Repair serumApplication: massage Y Theorem Repair Serum sparingly onto the face and neck with a gentle patting motion. Apply the appropriate day or night cream on top of the serum30ml Y Theorem Repair serum 30ml