Retin-a

by Kate Dee, MD  What’s the difference? Why do I need them? I’m often asked what is Retinol, what’s the difference between Retinol and Retin-A and why I recommend them. How are they different? Retin-A (tretinoin) is the active form of Vitamin A. Retinol is a topical form of Vitamin A that must be absorbed […]