Hi all, been following this thread, did the treatment a couple of weeks ago. My hair is mega thick and wavy/frizzy, and now it's smooth, shiny and quick to dry. It's still wavy, but really quick to straighten if I want to - five minutes instead of 30.
Best thing is my fringe - before I'd have to blow-dry and straighten every day, but now a couple of minutes blast with a hair-dryer and it's done 
So really pleased - only downside is my hair seems to get greasy more quickly, and needs washing daily, where before I could go three days easily.
Does anyone know if softened water will make the treatment wash out more quickly, because it's salt, and you're told to use salt-free shampoo? I have to use soft water because it's the only thing that clears my dandruff...
Overall really pleased though - to those dithering, just do it!