I started using this last summer and it has changed my hair life!
I have wavy hair that get very frizzy if I don't use any product. I also live in the DC area with heat and humidity that leave my hair a mess six months out of the year if I walk outside. Most product won;t do anything for the humidity, but this one did the trick for me. In light rain, no frizz.
My hair is never frizzy when I use it staright out of the shower while my hair is still wet. I love the stuff and let friends use it when they don't believe my hype.