Is it true that if you use tretinoin before wrinkles start it will have a better effect rather than when wrinkles have formed?

Thank you for your question. In my opinion, tretinoin works well for prevention of fine lines and wrinkles because one wrinkles appear and become deep, topical therapy is not as effective. Unfortunately, tretinoin is not effective in treating ice pick scars. If you have further question, I recommend consulting with a board certified dermatologist in your area. Take care and good luck.