Starting slowly is the key to tolerating Tretinoin well. Begin with a pea-sized amount at night, every other evening, unless your provider directs otherwise. Apply to dry skin — cleanse gently, let your skin dry completely, then apply a thin layer over acne-prone areas. Use a simple moisturizer to reduce dryness and help your skin acclimate, and wear sunscreen every morning, since Tretinoin makes skin more sun-sensitive.
As your skin adjusts, your provider may guide you to increase frequency or strength over time. Message your provider through your account anytime you have a question along the way.