How to use them
Use them in the same routine in the morning. Apply Ferulic Acid first, then Azelaic Acid, moving from thinnest to thickest texture. Finish with sunscreen in the morning.
- 1CleanseGentle cleanser, pat dry
- 2Ferulic Acid0.5%, wait about 1 minute
- 3Azelaic Acid10% – 20%
- 4Moisturiserthen SPF 50 in the morning
What Azelaic Acid does
A multitasker that treats acne, rosacea redness and pigmentation at the same time. It is widely considered safe in pregnancy, so it is a common swap for retinoids.
- Typical strength
- 10% – 20%
- When
- AM/PM
- Irritation
- Best for
- Sensitive, Oily, Combination And Normal skin
Everything that pairs with Azelaic Acid →
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 Azelaic Acid and Ferulic Acid together?
Yes, it is safe. There is no known chemical conflict between Azelaic Acid and Ferulic Acid, and neither makes the other less effective.
Which goes first, Azelaic Acid or Ferulic Acid?
Apply Ferulic Acid first, then Azelaic Acid. The general rule is thinnest to thickest texture, and lowest pH first.
Should I use Azelaic Acid in the morning or at night?
Azelaic Acid: works morning or night. Apply once or twice daily. A mild tingle in the first week is normal.
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.