How to use them
Use them in the same routine in the morning. Apply Ferulic Acid first, then Benzoyl Peroxide, moving from thinnest to thickest texture. Finish with sunscreen in the morning.
- 1CleanseGentle cleanser, pat dry
- 2Ferulic Acid0.5%, wait about 1 minute
- 3Benzoyl Peroxide2.5% – 5%
- 4Moisturiserthen SPF 50 in the morning
What Benzoyl Peroxide does
It kills acne-causing bacteria (C. acnes) by releasing oxygen into the pore. It works fast on inflamed pimples, but it is drying and can bleach towels and pillowcases.
- Typical strength
- 2.5% – 5%
- When
- AM/PM
- Irritation
- Best for
- Oily And Combination skin
Everything that pairs with Benzoyl Peroxide →
What Ferulic Acid does
A plant antioxidant best known for stabilising vitamins C and E. Together the trio roughly doubles photoprotection compared with vitamin C alone.
- Typical strength
- 0.5%
- When
- AM
- Irritation
- Best for
- Normal, Dry, Combination And Oily skin
Everything that pairs with Ferulic Acid →
Frequently asked questions
Can I use Benzoyl Peroxide and Ferulic Acid together?
Yes, it is safe. There is no known chemical conflict between Benzoyl Peroxide and Ferulic Acid, and neither makes the other less effective.
Which goes first, Benzoyl Peroxide or Ferulic Acid?
Apply Ferulic Acid first, then Benzoyl Peroxide. The general rule is thinnest to thickest texture, and lowest pH first.
Should I use Benzoyl Peroxide in the morning or at night?
Benzoyl Peroxide: works morning or night. 2.5% works about as well as 10% and irritates less. Use as a short-contact wash or a spot treatment, and keep it away from fabrics.
Should I use Ferulic Acid in the morning or at night?
Ferulic Acid: best in the morning. Use in the morning under sunscreen, ideally in a combined C + E + Ferulic serum.
Is Benzoyl Peroxide with Ferulic Acid safe during pregnancy?
Neither is a known risk in normal cosmetic amounts, but guidance varies for Benzoyl Peroxide. Check with your doctor.