I posted on here last week asking if root boosting crimpers would fry fine hair. Anyhow didn't get any replies so ordered one anyhow. Just collected it from post office today and used it for the first time and decided to crimp all my hair with it not just the roots. The end result is bloody fantastic. It doesn't look crimped really, just as if I have amazingly thick hair! And my hair is v v fine, especially on the crown and hairline. I've got it on the lowest setting and there was no smoke or scary sizzling going on. Unlike the beach wave tongs I got which just trashed my hair the first time I used it. Anyhow I just wanted to share because I was really expecting to have to return these to Amazon as yet another hopeless hair rescuing gadget, but am very nicely surprised. I have BIG hair! Yay!