Azelaic Acid
Azelaic acid is unusually well tolerated for how much it does — it fades post-acne marks, calms active breakouts, and reduces redness, which makes it one of the few actives here that reactive or rosacea-prone skin can usually use without a slow ramp.
How to introduce it
3x
Starting / week
7x
Target / week
3w
Ramp period
8w
Fair to judge by
Rules that don't bend
- Generally well tolerated but patch test first if skin is reactive.
- Safe to combine with most other actives — one of the few exceptions to the alternate-night rule.