I had the same problem you have for years! Oh my gosh, frizzy hair is the worst!! I know how you feel!! You want to know a kind of hair straightener that actually worked for me after trying about five?? And it seriously was only $40 I love it soooo much, and I've used it for about two years, and it works SO WELL. It's the conair infinity straightener WITH THE COMB. You NEED THE COMB attachment, it's a gift from above, seriously haha. Mine has the comb and it goes up to 425 degrees F. My hair is very think and naturally frizzy and curly, and it is a COMPLETE NIGHTMARE, all the other straighteners would make it less poofy, it didn't make it look straight at all. But the temperature, plates, and the comb on the infinity make it the best thing ever. It seriously takes me less than 15 minutes to do my hair, and when I wake up it's seriously an afro. Sooo yes, that is the hair straightener I recommend, way under $100 too, better then a lot of pro ones. Also I recommend using some kind of anti humidity or frizz block spray after you straighten your hair, humidity is your worst enemy and will poof your hair right back up. You know you could always chemically straighten it or have it keratin straightened, but that wasn't your question so I won't go off on a random tangent...haha So, Conair Infinity straightener WITH THE COMB, under $40, and a godsend.