Just ok [SEP] I try to get Keratin treatments every 3 months, but honestly it has been getting costly. So, when I saw this I was excited to try it. I found it difficult to use and almost impossible to get to saturate the back of my hair and straight iron it the way they do in the salon. Front and sides were ok, but I couldn't maneuver the back to get it straight. Then I saw the ingredients after the first time and saw it contained formaldehyde and that was the last time I used the actual treatment. I did, however, use the shampoo and conditioner (and I still am). I wish they sold the S&C separate because I really did like it and I am always in the market for a good hair wash which won't strip my hair between treatments. I will resume my regular treatments at my salon.