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
emergingVitamin 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
Read more
How Drop works · 5 minConcentration Alone Doesn't Tell the Whole Story: pH, Formulation, and Delivery MatterA higher vitamin C percentage isn't always a more potent serum. Concentration is one variable; pH, formulation, and delivery often matter as much or more.Reading the evidence · 5 minSunscreen for Aging Concerns: The Most Evidence-Backed Step in SkincareIf one skincare claim has the strongest evidence behind it, it's daily sunscreen for aging-related skin concerns. Here is what the research actually shows.How Drop works · 4 minWhy Skincare Fridges Are Mostly a Marketing StoryMost skincare products are formulated for room-temperature stability. Vitamin C and retinol benefit from cool dark storage — a cabinet is sufficient.
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