Based on a Duke University patent combining 15% L-ascorbic acid with vitamin E and ferulic acid at a specific pH — widely cited as the benchmark formulation in vitamin C research.
Best for those wanting the most extensively studied vitamin C formulation available, particularly for photoaging, fine lines, and pigmentation, at a premium price point that reflects the research and patent behind it.
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SkinCeuticals C E Ferulic is a premium offering from SkinCeuticals that targets those with those wanting the most extensively studied vitamin C formulation available, particularly for photoaging, fine lines, and pigmentation, at a premium price point that reflects the research and patent behind it. The inclusion of L-Ascorbic Acid 15% provides high-concentration active vitamin c. Best suited for those wanting the most extensively studied vitamin C formulation available, particularly for photoaging, fine lines, and pigmentation, at a premium price point that reflects the research and patent behind it.
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TruSkin
Best for: Best for those wanting an entry-level vitamin C serum to address dullness and early pigmentation without a premium price point.
Best for: Best for those wanting a similar active-ingredient profile to premium vitamin C serums without the premium price point.
Ole Henriksen
Best for: Best for those wanting a vitamin C serum with a more cosmetically elegant, less potentially irritating texture than pure L-ascorbic acid formulas.