Obagi Retin A (Tretinoin) .025%, .05%, .1%($65)($110):
Tretinoin works deep inside your skin, reducing pore size and treating blemishes. It can also help the appearance of fine lines and wrinkles. Because this is a prescription product, you must be an established patient before you are able to purchase. For all skin types.
How to use: Use a pea sized amount on a completely dry face 2-3 nights a week, working your way up to every night over time. You may find that this product causes irritation. If this is the case, reduce use to a few nights per week.