You can get steam straighteners for home use - I got mine about 12 years ago. It is a Vidal Sassoon, can't see why you wouldn't still be able to get them.

I got the Potion 9 from my hairdresser, Synergy at The Block Arcade in the city, I presume you can buy it from good salons. You use the tiniest amount and use it after your done straightening it and it makes every thing smooth and frizz free without any weight or gross crunchy or tacky feeling. You wouldn't know it was in there, save how awesome your hair will look.