How to keep your hair straight all day? [ Edited ]

[#1]

Hi- I have very naturally wavy hair and everyday i use TRESemme shampoo & conditioner(Volumizing) then i blow dry and straighten my hair with a Remington straightener(S9950C). After about 10 minutes, my hair is starting to wave at the ends and it looks bad. *Also i use John Freida straightening stuff you put in damp hair, doesn't seem to help.*

-Any ideas on products or how to keep my hair super straight all day?

                                    Thanks for the help <3

[#2]

I would try Bumble and Bumble Straight.  All you need is this product, a blow-dryer, and a brush. It straightens wavy, curly, and unruly hair and offers control, heat and humidity protection, flyaway reduction, smoothness, and shine.  You just apply it before heat styling and it keeps your hair straight.  You can find it here:  http://www.sephora.com/browse/product.jhtml?id=P280546&categoryId=B70

I hope this helps you.