CD it's a Japanese permanant straightening system. Done in a professional salon, takes about 4/5 hours but gets fantastic results. No faffing about at home ever again. Imagine emerging from the shower with wet hair, leaving it to dry naturally into straight, shiny sleekness. I'm jealous! BTW it costs between £200 and £300 depending on the lenght of your hair, and you have to have your roots done!