How does prescription tretinoin work for acne?

Tretinoin is a medicine related to vitamin A. It changes how skin cells develop and shed, which helps keep pores from becoming blocked. It may be prescribed for whiteheads, blackheads, and some inflamed acne spots. Results vary. It is not a quick spot treatment for a single pimple.

Tretinoin is usually used as part of an ongoing skin care plan. Your physician may pair it with another ingredient that targets a different part of acne, such as inflammation or bacteria. The right choice depends on your acne type, skin sensitivity, current medicines, and health history. Do not use someone else's prescription or choose a stronger product on your own.

Some prescriptions are compounded. Compounded medications are prepared by a licensed pharmacy for one patient and are not FDA-approved. The FDA does not review them for safety, effectiveness, or quality before they are marketed. A licensed physician in your state decides whether a particular treatment is appropriate and provides directions for its use.