Formulated at the precise concentration proven to deliver maximum amounts of vitamin C to the skin, Serum 20 is now formulated with AOX+ advanced antioxidant technology, combining ferulic acid with 20% L-ascorbic acid to enhance antioxidant performance. Designed to restore and protect healthy looking skin, this lightweight and fast-absorbing serum neutralizes free radicals, defends against environmental damage, and helps prevent premature signs of aging. Ideal for normal to oily skin.

Benefits

• AOX+ advanced antioxidant technology — combines ferulic acid with L-ascorbic acid to enhance antioxidant performance
• Reduces the appearance of fine lines and wrinkles, neutralizes free radicals, defends against environmental damage, and stimulates collagen synthesis
• Using Duke-patented vitamin C technology, delivers 20% L-ascorbic acid to the skin — highest level effectively absorbed
• Once absorbed, can’t be washed or rubbed off, remaining protective for up to four days — an excellent addition to sunscreens
• Ideal for normal or oily skin