I tried it. I'm not crazy about it. I've done "real" BKT's at home and this one made my hair very coated feeling (you can't wash for 48 hours) and it also lightened my hair. I dare say it stripped the toner from my hair. I read somewhere that the high heat of the flat iron would do that but I don't think so, I my iron all the time. Oh, and, the fumes made my eyes sting and water like crazy, that's never happened with a real BKT---and my real one's probably not "aldehyde" free. Organix says it's "formaldehyde" free.....something's in there! If you want the real thing, at home, I recommend Encanto Brazil. The company has an eBay store and a Facebook page.