We bought 2 of these, one for my mom, and one for me and my daughter.
my mom has very thin shoulder length hair, she loves it, it adds volume and tames her flyaways.

its great on my hair, I have very long kind of thick hair, (reaches the top of my bum.) all the hair from the nape of my neck to half way up my scalp is curly and the hair on the top half of my head is kind of wavy, and all of it is frizzy. (weird i know) with the use of this instyler to get my hair done it, only takes 15min!! I hardly ever use the straightener inside though, but it is handy when needed.

my daughter who is only three loves it, her hair is like mine only blond, I don't have to worry so much about burning her, (I have never used a regular straightener on her hair.) she loves when her hair isn't all messy, my aunt calls it baby model hair. and all I have to do is brush it. it slides rite threw tangles and knots are SO easy!

I have also used this on my nieces hair she has "curly/african" hair she was AMAZED and absolutely in love with running her fingers threw her hair. it didn't take very long at all, maybe one kid show.

I use the higher setting on my hair and my mom and daughter get the lower setting to avoid heat damage.

the only thing I didn't like is your hair has to be COMPLETELY dry before you style it, otherwise it hardly even works.