This product is incredible. Im almost 24, and started using Paulas choice at 22 when I started to notice some early signs of ageing. My skin was in a very transitional stage, with regular yellow pimples. This product has made my skin amazing. Within the first 2 days of using the product the pimples were disappearing and no more new ones were popping up, I had A LOT of blackheads which were raising to the surface of my skin and would basically just fall out of my skin if I softly scratched my nail across it (kinda gross sorry). Within 2 weeks my skin was basically perfect. Now I get NO yellow head pimples, its been almost 2 years and its amazing. I get occasional blackheads rise to the surface, but its just like I described above and no red mark is left. I also think this product has played a huge role in reducing the appearance of my frown lines, I also have no signs so far of fine lines near my eyes. 1 bottle lasts me about 8 months, applying once daily (at night) you need the tiniest amount as a little goes a long way. The only negative thing I could say is if you're an oily skinned person like me and apply this at night, if you haven't washed your face yet in the morning, sometimes the product and oil almost 'mix' together, if you touch or rub your face and then make contact with your eyes, it can sting a little. But I cannot sing enough praise for this product, I think it is incredible and has actually changed my life.