Review (5/5): Love this product, really works in high humidity!
I found this easy to use and I really put it to the test, while on vacation in a high humidity area I used it on the top layer only, wasn't looking to go stick straight, more to calm the frizzy's on my outer layer & it worked like a charm. After a full day by the Ocean with incredible humidity, only slightly noticed any frizzy hair & I was really looking for it, will use this treatment again. The outer layer is very straight, and the under layers are still wavy, did not apply solution to under layers. Only time will tell how long it lasts, but so far very impressed. Did not notice any more fumes than at a salon, I do not have overly processed hair, hair actually looks darker and healthier, even my hubby commented. Just for info, I do color (dark brown), about every 4 weeks due to creeping gray's, but overall healthy hair, mid back length. Hope this helps others, great product and a fraction of the cost of a salon visit. (I think my bottle may last 4-5 treatments, considering I am only doing the top layers.