I think I've gotten rid of this kind of frizz with heat too. I have taught myself how to blowdry my hair. I've heard people say that using a "ceramic" blowdry brush (Try Sally's) will help with straightening, but I've used just a Denman brush with Frizz Ease serum. The other thing is to make sure that your last conditioner is a REALLY good detangler. I use Pantene Smooth and sleek. Then try Frizz Ease on sopping wet hair (just for extra oomph, I use water as cold as I can stand it).
With blowdrying, the key is with the tension and the dryer type itself. Do not attempt to blowdry your hair with a dryer having anything less than 1800 watts. I used to try it and my hair was always a frizzy, dried out mess when done.
Try this: Clip your hair into 4 sections. Starting with the back (harder to see in the back and your arms start to get tired by the time you finish the front). Pull the brush 1/2 way through the hair in that section and hold the hair taut (not tight, you don't want to feel pain) and hold the dryer at a 45 degree angle to the hair, starting at the roots. Move the dryer down the hair, (if you dry back and forth, you are forcing the cuticle back up). As you SLOWLY move the dryer down the hair, SLOWLY pull the brush through to the ends of the hair.
Finish the back then the front, since it's easier to see. I did this tonight and my hair's so silky I can keep it out of my face. Let me know if this helps.