Topical retinoidTretinoin
Changes follicular cell turnover to reduce microcomedone formation. It works across consistently treated acne-prone skin, not as an instant spot treatment.
- Often discussed forBlackheads, whiteheads, mixed acne and prevention after active breakouts improve
- Main jobKeep pore-lining cells from sticking together and forming new clogs
- TimelineIrritation can appear early; definite acne benefit may take more than six weeks
- Long-term roleMay continue as non-antibiotic maintenance while it remains useful and tolerated




