Has anyone used this? My doctor put me on a skin health regimen that included a 10.5% glycolic acid and something called retrinal. I will say that my skin has better texture & less wrinkles. She said my next step is Retin-A and although I had no reaction with the other cream that I would have redness & peeling in the beginning with the Retin-A. I've been scared to try it because of that, has anyone used it, what reactions did you have?