My sister owns of one of these and whenever we're together we do each others hair . It works amazing for them leaving their hair pin straight for days or until the next hairwash,i on the other hand am a totally different story as my hair stays straight for an hour or two after straightened, this being to the fact that I'm the only one out of five sisters to be born with utterly thick and curly hair that tends to frizz .. So based on the results my sisters get after using this I'd say this is pretty awesome.