Curly Hair
For curly hair, the best nozzle you can use is a diffuser. If you're styling your strands in their natural state, you want to soften the air flow to your hair to keep your curls intact and frizz-free. I highly recommend the T3 Featherweight 2 Dryer, which helps add sheen, softens the hair, and works to keep all the moisture in your cuticle intact. With its proprietary infusion process, this dryer emits negative ions and infrared heat for fast, healthy drying, so it's great even for the heat-conscious. It doesn't hurt that it has a sleek look, either!
Fine Hair
When blowdrying fine hair straight, you want to be careful with heat since the cuticle is so sensitive. Even if you use a protectant, too much heat on the regular can permanently dry your hair out, making it hold onto more water and harder to style. Fine hair adjusts best to a low-wattage dryer with minimal heat and hair pressure. Give the BaByliss Pro TT 5000 a try. With a small, concentrated nozzle you can focus the air exactly where you need it to go.
Coarse Hair
Coarse, unruly, and hard-to-manage strands need some some serious power. Usually, only high heat and a strong airflow can tame the cuticle, straighten, and keep frizz at bay. But, be sure to use a heavy-duty, cream heat protectant prior to blasting the heat. Try using the Twinturbo 3500 Professional Hair Dryer, which has four different heat settings and two different air flows to choose from. With a fantastic and fast-acting cool shot button, you can cool your hair around the brush to add shine, close the cuticle, and lock in your style much better than dropping the hair down when it's hot.
Medium Hair
For those of your with medium density and texture, you need a solid mix of a powerful flow and gentle heat. I know that sounds like oxymoron, but a too-high heat setting can fry your tresses, while weak air pressure could take up valuable time. The SKP Pro Heat Digital Dryer by FHI has everything from a strong air flow that is easily manipulated to a wide nozzle, diffuser, and a small concentrator. It also has a fast-acting cool shot button, a quality ionic air flow, and it's so easy to handle.