Cited skincare — peer-reviewed evidence, no upsell.
Fe

Ferulic Acid

Ferulic AcidAntioxidant

Plant antioxidant that stabilizes vitamin C and extends its photoprotective effect.

What it does

Ferulic acid lengthens the half-life of vitamin C in formulations and adds its own antioxidant activity. Most useful as part of a CE Ferulic-style product; rarely sold standalone.

The evidence, graded

strongVitamin C, vitamin E, and ferulic acid show synergistic photoprotection. The combination is more stable and doubles photoprotection compared to vitamin C alone.Lin 2005 · Journal of Investigative Dermatology ↗

Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.

Pairs worth knowing

L-Ascorbic Acid (Vitamin C) · works together ↗Vitamin E (Tocopherol) · works together ↗
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