CHI's protectant spray is nice, so are Beyond the Zone "Turn up the Heat" spray, ummm what else... HASK has a good one... and so does "Ion" protectant spray (Beyond the Zone & Ion can be found at Sally's Beauty supply stores) HTH!
I use "Get It Pressed" or something like that in my hair. You spray it on damp hair, then use a flat iron. (You might want to blow dry your hair first!) You can find it in Regis Salons.
Try Matrix Sleek.Look "Iron Smoother", it's what I use on my hair and it's supposed to protect hair up to 410 degrees. It's available at most salons, or check www.matrix.com for details
I used that even when I rarely used heat styling products, and it still works great with my hair. I sometimes use it right before heat styling, and it doesn't dry out my hair. =)