Thank you for your question. Retin A (also known by its generic name, tretinoin) is a potent derivative of vitamin A. Although it was initially discovered as an acne medication, tretinoin is highly effective as a collagen stimulator. There really is no other topical agent out there with more scientific studies supporting its efficacy in terms of reducing fine lines and wrinkles - tretinoin truly is the gold standard of anti-aging. Tretinoin can be a little irritating when you first start using it - its not uncommon to experience some redness, peeling, and sun sensitivity. Tretinoin is only available by prescription - there are milder, over the counter vitamin A creams (known as retinols) that are available without a doctor's prescription.
