The purge is a temporary worsening of breakouts that can occur in the first few weeks of starting a topical retinoid (tretinoin, adapalene, tazarotene) or, less commonly, certain other actives. The mechanism is straightforward: the retinoid accelerates the rate at which your skin turns over surface cells, which means existing congestion sitting under the skin surfaces and resolves faster than it otherwise would. Visible breakouts can rise temporarily even though the underlying pattern is improving.
What a purge typically looks like:
- Begins around weeks 2 to 4 of starting the prescription, peaks around weeks 4 to 6, and resolves by weeks 6 to 8.
- Breakouts appear in your usual problem areas, not in places where you don't typically break out.
- Lesions are similar in type to your usual breakouts (small inflammatory papules, comedones), not new severe forms.
- Skin gradually settles into clearer baseline beyond the purge window.
What is NOT a purge — message a board-certified dermatologist on our medical team:
- Severe pain, deep cystic lesions you didn't have before, or large sudden flare-ups outside your usual pattern.
- Cracked, weeping, burning, or visibly damaged skin barrier.
- Hives, swelling, or other signs of allergic reaction (this can be the vehicle, the antibiotic, or another component, not the active).
- Worsening that continues past week 8 with no signs of improvement.
If you're not sure which it is, message a board-certified dermatologist on our medical team through your account with photos. Most purges can be eased with a temporary reduction in application frequency (going from nightly to every-other-night), more aggressive barrier support, and patience. The single most common cause of treatment failure with prescription topicals is stopping during the purge phase — when the medicine was working, not when it wasn't.