A woman with type 3 hair blows out her hair quite straight with a blow out cream and round brush and blow dryer.

I want to start using heat regularly on my hair, but only with a blow dryer and not a flat iron. But usually when I blow out my hair w/ either a comb attachment on a comb/denman brush it never gets this smooth, just huge. But I'm thinking if I use a thermal round brush I can get a smoother sleeker look.

My hair is 4a/4b.
Goosefootprint Analysis:
Hair Strand Thickness
Root: Fine - Medium Midshaft: Medium Ends: Slightly Coarse

Hair Elasticity Dry: Normal

Hair Elasticity Wet: Low

Roots: Low Midshaft & Ends: Mixture of Normal & Porous