What it does
- Adds antioxidant, environmental protection.
- Stabilises and boosts vitamins C and E (the classic C+E+ferulic network).
- Supports a brighter, better-protected complexion.
How it works
Ferulic acid is a hydroxycinnamic-acid antioxidant found in plant cell walls. It is widely documented to stabilise vitamin C and E formulas and enhance their photoprotective antioxidant benefit, which is why it appears in many CE-ferulic serums. It is not very water-soluble, so it is usually pre-dissolved.
Use level
- Typical use level
- typically 0.5–1%
Commonly used around 0.5–1%, most often within a vitamin C/E antioxidant serum.
Formulation considerations
- Poorly water-soluble; dissolve in a suitable solvent or add with the antioxidant system.
- Works in the low-pH range used for vitamin C serums.
- Best used as part of an antioxidant network rather than alone.
What it pairs with & what to avoid
Pairs well with
- Vitamin C and vitamin E (classic network)
- Sunscreen (daytime antioxidant support)
Use with care / avoid
- Relying on it alone — it shines as a stabiliser and booster
Regulatory status
Ferulic acid is listed in the EU CosIng database and is a well-established antioxidant ingredient.
Common questions
What does ferulic acid do?
It is an antioxidant that also stabilises and boosts vitamins C and E, which is why it is common in CE-ferulic serums.
What percentage of ferulic acid is used?
Usually around 0.5–1%.
Can ferulic acid be used with vitamin C?
Yes; it is specifically valued for stabilising and enhancing vitamin C and E serums.