Tips on after I straighten my hair to keep it from becoming wavy later on when it's cold outsid

I actually have a really good hair straightener. It's a professional one. I use a product that is called got2be crazysleek or something like that, but later on my hair get's all wavy during the day if it is windy. Any tips on what to do besides buying a product or something?

Tips on after I straighten my hair to keep it from becoming wavy later on when it's cold outside?!?!?!?

i use a CHI hair straightener and i love it. (you dont even need anything and it makes your hair super straight) even when there's rough weather. i would sugguest CHI "silk serum" before u iron or if u dont have a CHI get one..