Can u tell me how to straighten using glatt straighten ing cream?

Heyy. I can't say I know much about straightening cream but does it not come with instructions?
I imagine you just leave it on the hair for a few hours? Not sure.
Here's a website with a little information:
Schwarzkopf straightening cream :: Hair Schwarzkopf Glatt :: Sheapro

Sorry can't be much help =]