How long does it normally take Tretinoin to work?

Thank you for your question about your acne treatment.Retin A does not have to be applied in the dark.It is typically applied at night.It will make the skin sun-sensitive - a sun block should always be used.Always see a Board Certified Plastic Surgeon.Hope you find this information helpful Best...

We recommend applying Retin-A on clean, dry skin with a pea-sized amount (or as prescribed by your physician). To minimize the adverse effects related to retinoid usage, it is recommended to begin application on alternate nights for the first 2 weeks of use, at minimum, or until deemed tolerable...

Thank you for your question about your Retin A treatment.Your reaction to Retin A will typically last 2 - 4 weeks.If the Retin A hurts when you apply it, contact your doctor before using it again.Always see a Board Certified Plastic Surgeon.Hope you find this information helpful Best wishes.