A daytime antioxidant serum delivers the maximum amount of pure vitamin C to the
skin for environmental protection
Formulated at the precise concentration proven to deliver maximum amounts of
vitamin C to the skin, Serum 20 AOX+ is designed to restore and protect healthy
looking skin. This lightweight and fast-absorbing serum neutralizes free
radicals, defends against environmental damage, and helps prevent the appearance
of accelerated aging.
Helps reduce the appearance of fine lines and wrinkles, neutralizes free
radicals, and defends against environmental damage
Using Duke-patented vitamin C technology, this serum delivers the highest
level of L-ascorbic acid that can be absorbed by the skin
Once absorbed, this serum can't be washed or rubbed off. It remains
effective for a minimum of 72 hours, making it an excellent step in your
Once in the morning after cleansing, apply 4-5 drops to a dry face, neck and
ADVANCED SKINCARE BACKED BY SCIENCE.
Our mission is to improve skin health. Dedicated to this purpose, we make one
simple promise—to provide advanced skincare backed by science.
Born from decades of skin cancer research that led to pivotal breakthroughs in
antioxidants, our high potency formulas are concentrated in pure actives and
proven to penetrate optimally into skin.
Made in the USA, our clinical skincare is used by dermatologists, plastic
surgeons, and medi-spas for daily homecare and to complement aesthetic
procedures. We formulate to correct signs of aging, protect healthy skin, and
prevent future damage.
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