Serum 20 AOX+
prevent

Serum 20 AOX+

A daytime antioxidant serum delivers the maximum amount of pure vitamin C to the skin for environmental protection

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$119.00

30 ml

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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 addition to sunscreen.
skin types
Normal
Oily
skin condition
Hyperpigmentation
Acne
Aging

Science

Formulated with AOX+ advanced antioxidant technology, Serum 20 combines ferulic acid with pure vitamin C at the precise pH and concentration to enhance performance and deliver maximum levels of L-ascorbic acid.

Innovation 1

L-ascorbic acid has a reservoir effect, which means it can’t be washed off or rubbed off for a minimum of 72 hours.

Innovation 2

The addition of ferulic acid enhances the antioxidant performance of vitamin C.

Use

In the morning after cleansing, apply 4-5 drops to a dry face, neck and chest.


It is normal for vitamin C products to darken after opening due to air and light exposure. Any change in color does not affect the product's efficacy.

regimen

  • 1: Cleanse & Tone
  • 2: Prevent with Serum 20 AOX+
  • 3: Correct
  • 4: Moisturize
  • 5: Protect

Key Ingredients

Key Ingredient 1

20% L-ascorbic acid (vitamin C): Neutralizes damaging free radicals and protects skin’s breakdown from oxidative stress.

Key Ingredient 2

0.2% Ferulic acid: This plant-based antioxidant neutralizes free radicals, inhibits UV-induced skin discolorations, and has anti-inflammatory properties.

Serum 20 AOX+ Reviews

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