serums
C E Ferulic with 15% L-Ascorbic Acid
This is the gold standard of Vitamin C serums, backed by the Duke Antioxidant patent which ensures a specific pH and concentration for maximum skin penetration. It provides 8x the skin's natural protection against environmental damage.
Quality & Materials
Contains 15% pure vitamin C (L-ascorbic acid), 1% vitamin E (alpha tocopherol), and 0.5% ferulic acid. No unnecessary fragrances or fillers.
Evidence & Testing
Extensive peer-reviewed clinical studies demonstrate its ability to neutralize free radicals and improve signs of aging. It is a staple in dermatological literature.
Brand Transparency
Full ingredient disclosure with exact percentages of actives. Manufactured under strict pharmaceutical-grade standards.
Value Assessment
While high-priced, the concentration and stability mean every drop is effective, unlike cheaper Vitamin C serums that oxidize and become useless quickly.
Why Not Alternatives?
Most competitors lack the specific pH (2.0-3.5) and concentration balance required for L-ascorbic acid to actually penetrate the dermis; SkinCeuticals owns the patent on the most effective stabilization method.
Sources & References
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