The general recommendation for using tretinoin is to start slowly and gradually increase usage to allow your skin to build tolerance. Typically:
- For the first 2 weeks, apply tretinoin 2 to 3 nights per week.
- During the following 2 to 4 weeks, increase usage to every other night or 3 times per week.
- After 6 to 8 weeks, if your skin tolerates it well, you can aim to use tretinoin every night.
- After 12 weeks of daily use, you may consider increasing the strength if needed, with guidance from your healthcare provider.
Always apply tretinoin at night on clean, dry skin, waiting about 20-30 minutes after washing your face to reduce irritation. Use only a pea-sized amount for your entire face. If irritation occurs, reduce frequency or skip a night or two. Also, daily use of sunscreen with at least SPF 50 is essential when using tretinoin to protect your skin from sun damage.
In summary, start with 2-3 times a week, gradually increase to alternate nights, then nightly use if skin tolerates it well. Adjust depending on individual skin response and follow medical advice.
