450 degree heat? 50 degrees more and you can broil a steak! Formaldehyde ?There was a thread on nc.com about this. These articles alwasy talk about hair being "pin" straight. I do't think that's attractive. At the same time, I've seen photos of women who have had the treatment and their hair looks healthy.
My blog - http://suburbanbushbabe.wordpress.com/
My FOTKI - http://whatsnew.fotki.com/suburbanbushbabe/

Playing with my hair is a hobby. Fluffy, fine natural 4a. Goal= Healthy, beautiful hair that retains its length.
Hear that crash? It's me falling off the CG wagon.