Ingredient

Ferulic acid

Boosts the stability and effect of vitamin C and E.

What it does

Antioxidant

Evidence

Evidence: Moderate · Some good studies; results vary from person to person.

Often chosen for

Dull, uneven-looking tone, Fine lines

Skin types

Oily, Combination, Normal

Typical amount

0.5-1% in a formula

Best time

Morning