Serum 15 AOX+ - Antioxidants
Serum 15 AOX+
Combines 15% L-ascorbic acid with ferulic acid to provide antioxidant and anti-aging benefits
30 ml
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Designed for all skin types but the most sensitive to restore healthy looking skin, Serum 15 AOX+ 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 15% L-ascorbic acid to 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 condition
clinical study
Studies show that when formulated properly (as all SkinCeuticals antioxidants are), a 15% concentration of L-ascorbic acid is readily absorbed by the skin.
Formulated with AOX+ advanced antioxidant technology, this lightweight, fast-absorbing serum combines ferulic acid with 15% pure vitamin C to enhance antioxidant performance.
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 stabilizes and enhances the absorption of vitamin C.
Once 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.
1: Cleanse & Tone
2: Prevent with Serum 15 AOX+
3: Correct
4: Moisturize
5: Protect
key ingredients
Key Ingredient 1
15% 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 15 AOX+ 5 5 1 1
My every day treatment I have very sun sensitive skin. I tan very easily in a short time. I also live in Texas so I ended up with uneven skin tone and freckles and sun spots. I wanted to try out a vitamin C product to help my skin. I actually see the difference in my skin and I've been using this serum for about a year. My uneven skintone looks much more even toned and I dont see any more new sun spots coming up. So happy! I feel good about preventing sun damage to my skin. I wish I've done it earlier. August 9, 2012
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