I have a conair hair drying brush that is like a straightener that you clamp together but it is also like a dual sided brush. You section your damp hair and run the hair drying brush from the root to end. You clamp the two brushes together while the hot air dryers your hair. It is blue and I can't find another one anywhere.
Sally Beauty Supply has pretty much everything you could ever want, in terms of hair and beauty products.
They have stores located everywhere I turn, it shouldn't be too hard to find one.
I have that same brush in pink. They usually have them in CVS in the beauty section