Product Details EUK 134™ 0.1%, is an oil-like serum designed to continuously support your skin with antioxidants and leave your skin looking brighter. By using a self-regenerating molecule that mimics the effects of two powerful antioxidants found naturally in your skin, this high-strength serum actively protects your skin from the visible effects of damage caused by environmental stressors. The low price of this formula does not reflect EUK-134™'s extremely high potency. EUK-134™ is by far one of the strongest antioxidants available. While EUK-134™ itself is very costly, the suggested concentration in any formula is below 0.05% and most formulas do not use this maximum suggestion. Our formula uses EUK-134™ at an extremely high 0.1% concentration and we do not believe any product on the market today uses a higher concentration than this amount. EUK-134™ is a trademark of Lucas Meyer Cosmetics Canada Inc. Neither DECIEM nor The Ordinary is affiliated with Lucas Meyer Cosmetics Canada Inc.