As a popular drug for treating acne, wrinkles, and other skin conditions, you may have heard of tretinoin or its less potent cousin, retinol. These drugs, simply put, are strong derivatives of Vitamin A. Vitamin A, an essential vitamin for your skin, speeds up the skin cell turnover and stimulates collagen production. You mention tretinoin and retinol. What is the difference? As they are both similar in chemical structure and tretinoin and retinol essentially function the sa