This product is obviously not as good as prescribed Retin-a creams which is why I took a few points off. But for an over the counter Retinol (less potent than Retin-a) product it delivers. I am in my mid 20s but want to prevent fine lines and smooth out a few acne scars from my teen years-- the results appeared within a couple of days. Avoid wearing this in the daytime; the exposure to the sun with the retinol could damage your skin. I prefer using it at night. A little goes a long way.