What pH does Ferulic Acid work at?

Ferulic Acid is most effective at a pH of <3.5 (when paired with L-ascorbic acid).

What pairs well with Ferulic Acid?

Ferulic Acid pairs well with: vitamin c, tocopherol.

Is Ferulic Acid safe during pregnancy?

Ferulic Acid is generally considered safe during pregnancy. Always confirm with your obstetrician.

What should I not mix with Ferulic Acid?

Use with caution alongside: high-pH formulas (deactivates antioxidant potential).

The guides · Antioxidants

Ferulic Acid

Q: What does Ferulic Acid do in skincare?

Phenolic antioxidant found in plant cell walls. Stabilizes L-ascorbic acid and vitamin E formulas — doubles antioxidant efficacy of the C+E combination in published studies.

Q: What pairs well with Ferulic Acid?

Ferulic Acid pairs well with: vitamin c, tocopherol.

Q: Is Ferulic Acid safe during pregnancy?

Ferulic Acid is generally considered safe during pregnancy. Always confirm with your obstetrician.

Q: What should I look for on the label when buying a Ferulic Acid product?

Listed as "ferulic acid" in INCI. Nearly always in the first half of a vitamin C serum alongside "ascorbic acid" and "tocopherol". A formula that names all three follows the gold-standard combination.

Q: What should I not mix with Ferulic Acid?

Use with caution alongside: high-pH formulas (deactivates antioxidant potential).

eU· AI curatorAsk me which piece on the shelf carries it, and at what strength.

Phenolic antioxidant found in plant cell walls. Stabilizes L-ascorbic acid and vitamin E formulas — doubles antioxidant efficacy of the C+E combination in published studies.

I · 2 min read

What it does

Phenolic antioxidant found in plant cell walls. Stabilizes L-ascorbic acid and vitamin E formulas — doubles antioxidant efficacy of the C+E combination in published studies.

The facts

Effective pH: <3.5 (when paired with L-ascorbic acid)
Category: Antioxidants
Also known as: Ferulic
Pregnancy: Generally considered fine; ask your doctor

III

Pairs with · fights with

Pairs well with

Conflicts

High-pH formulasdeactivates antioxidant potential

Before you use it

Rarely used alone — almost always a stabilizer/synergist in vitamin C serums. The classic C+E+Ferulic formula (popularized by SkinCeuticals) is well-supported in literature.

On the label

Listed as "ferulic acid" in INCI. Nearly always in the first half of a vitamin C serum alongside "ascorbic acid" and "tocopherol". A formula that names all three follows the gold-standard combination.

This guide is editorial, not medical advice. For a condition, a reaction or a medical question, see a dermatologist.