Ferulic acid and resveratrol — two ingredients, two separate jobs

They usually share a bottle, so people assume they're a combo. They aren't really. Ferulic acid helps skin look calmer and better conditioned; resveratrol supports a brighter, more even tone. They're studied separately, so a serum with both gives you each one's contribution — not a third thing they do together.

How to use it

• Mornings suit it best; evening works too.
• Full strength from day one. No purge, no build-up.
• After cleansing, before moisturizer and sunscreen.
• Whole face, including around the eyes.
• Sits naturally beside vitamin C and vitamin E, which often share the same bottle.

Two honest notes

• These serums often feel rich or slightly greasy. Ferulic acid needs an oil-leaning base — a lighter moisturizer over the top usually settles it.
• Skin can look a bit shinier through the T-zone with regular resveratrol use. Worth knowing if shine is something you watch.

Resveratrol has been reported as a contact allergen, so patch test if you know you react to it. And if the serum darkens, the antioxidants are spent — replace it.

Full page with sources: https://skinintelligence.ai/wiki/ferulic-acid-resveratrol