What kind of hair styling product can i use on my straighten hair whithout curling it back...?

i've tried gel..but its kinda wet so it reacts like water on my hair...is there somehitng like hair wax that makes ure hair water proof n u can swim n all that whithout getting it curly?What kind of hair styling product can i use on my straighten hair whithout curling it back...?
No, there isn't any product that works like that.





You can get your hair chemically straightened at a hair salon and it'll stay straight when you get it wet. That's the only thing that would work.What kind of hair styling product can i use on my straighten hair whithout curling it back...?
Serum - it doesnt have water if u look at the ingredients