My husband owns a hair salon and we did a keratin treatment back in April on me and my hair was falling out like crazy. I couldn't wash it for 4 days, which was ridic! I only lasted about 3 days and I was seriously loosing clumps of hair. Everytime I brushed or combed my hair, it was just horrible. I was scared that it would continue and I'd be bald. It stopped after a little bit, but now I have all broken short hairs all over my head. My sister had planned to get hers done after mine, but when we saw what it did to mine, she canceled. I did the Brazilian blowout about 2-3 weeks ago and so far, so good! I'm not loosing clumps of hair and I'm letting it air dry and it's fine. My hair isn't curly, it just has a kind of fuzzy texture to it, so this smoothed it all out and it dries with NO frizz. I have a pretty strong wave down the back of my head and this didn't straighten that out b/c it doesn't change your hair like keratin/perms do. So if your hair is curly, it will make your curls just more manageable and smooth, it won't make your hair super straight. All in all, I'm really happy with it so far! My husband has some before and after shots on his business facebook page, if you want to check it out. Tony D's facebook page