How can i make my hair STAY straight?

I got the brazilian hair straightening and I love it, but I still have to straighten it.


It only tkes 15 min now, and it used to take 1 hour and 15 min.


Even when it's straight now, it doesn't really stay straight and waves appear.


How can I fix that?


What products help hair STAY straight and LAST throughout the day?


With the brazilian hair straightening, can I put products in?


What is a good iron?How can i make my hair STAY straight?
mine does the same thing!


i heard hairspray. (original) haha


thats what i'm gonna try