Has anyone had this process done on their hair and if so are you happy with the result? I am very tempted but as my hair is coloured I am worried my hair will be damaged too much. What do you think?

Most hairdressers will tell you to go ahead but with coloured hair I would stick to a good blow dry.

Oh really why is that? have you heard that it is damaging?

My wife who has (had) very frizzy hair, tried keratin straightening and it worked really well, although she doesn't colour her hair.