serums
C E Ferulic with 15% L-Ascorbic Acid
The undisputed industry benchmark for antioxidant protection, backed by the original Duke University antioxidant patent. Its specific combination of 15% pure Vitamin C, 1% Vitamin E, and 0.5% Ferulic Acid is clinically proven to reduce combined oxidative damage from free radicals by up to 41%.
Quality & Materials
Uses high-purity L-ascorbic acid at a precise pH of 2.0-3.5, which is essential for skin absorption. Includes alpha-tocopherol (the most active form of Vitamin E).
Evidence & Testing
Multiple peer-reviewed studies published in the Journal of the American Academy of Dermatology; gold-standard clinical trials show significant reduction in UV-induced erythema.
Brand Transparency
Fully discloses active concentrations and pH levels; manufacturing involves strict atmospheric controls to prevent premature oxidation.
Value Assessment
High entry price ($182), but the concentration and stability ensure efficacy that cheaper, unstable alternatives cannot match, potentially saving money on corrective treatments later.
Why Not Alternatives?
Unlike competitors like Drunk Elephant or Maelove, SkinCeuticals publishes rigorous, peer-reviewed clinical data on the final formulation's stability and penetration, rather than just relying on ingredient-level data.
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