SkinCeuticals Serum 10 AOX+
The gentle way into vitamin C.
Serum 10 AOX+ uses 10% pure vitamin C (L-ascorbic acid) with ferulic acid at a lower, more tolerable strength. It defends against daily free-radical damage and adds brightness without overwhelming reactive skin, which makes it the ideal starting point if you are new to vitamin C or easily irritated.
Why it is worth it
A lower-commitment, lower-cost entry into medical-grade antioxidant protection, and an easy way to see how your skin responds before stepping up to a stronger formula.
How it compares
Step up to C E Ferulic (15%) for normal-to-dry skin, or Phloretin CF for oilier skin, once your skin is comfortable. Serum 10 is the beginner and sensitive-skin choice.
Best for: sensitive skin and first-time vitamin C users.
Not ideal for: experienced users wanting maximum strength (see C E Ferulic).
How to use
Apply 4 to 5 drops to clean, dry skin each morning, before moisturizer and sunscreen.



