- Comedolytic
- Synthetic Retinoid analog
- Adapalene only
- Gel 0.1% (Over-the-counter in U.S. as of 2017)
- Gel 0.3%
- Cream 0.1%
- Lotion 0.1%
- Combinations
- Adapalene/Benzoyl Peroxide 0.1%/2.5% gel (Epiduo)
- Adapalene/Benzoyl Peroxide 0.3%/2.5% gel (Epiduo Forte)
- Same as Tretinoin, but less severe
- Pregnancy Category C
- But generally recommended to avoid in pregnancy (esp. first trimester)