Plain-English guides to tretinoin: choosing a strength, starting slowly, managing the purge and side effects, combining it with other actives, and the routes to getting it in the UK. Tretinoin is a prescription-only medicine in the UK, so treat these articles as background reading and speak with a pharmacist or doctor before using it.

Looking for products rather than guides? Browse the tretinoin cream and gel range, which compares 0.025%, 0.05% and 0.1% strengths.