Hot air brush vs hair dryer: which should you use?

How each tool works

A hair dryer is a fan and a heater in a housing. It pushes a large volume of warm air through a nozzle, and you direct it at the hair. On its own it dries; with a brush and a concentrator nozzle it also smooths and shapes. Premium dryers use high-speed motors to move more air at lower heat.

A hot air brush puts a smaller fan and heater inside a brush head. Air comes out through vents between the bristles, so the hair is warmed while it is held in tension by the brush. That combination of heat, airflow and tension smooths the cuticle and adds bend, which is what gives a blow-dry its shape. Multi-stylers like the Dyson Airwrap and Shark FlexStyle include hot air brush heads among other attachments.

Side by side

These are general patterns rather than rules. A powerful multi-styler with a dryer attachment narrows the gap, and a basic dryer without a concentrator gives little control.

When a hair dryer is the better choice

Our best hair dryers in the UK guide covers premium models, and the curly hair guide focuses on diffusers.

• You have long or thick hair and want it dry fast.
• You have curly hair and want to diffuse rather than stretch curls.
• You are confident with a round brush and want maximum control.
• You only need to dry, not style, most days.
• You have very short hair that will not wrap around a brush head.

When a hot air brush is the better choice

For brushes and multi-stylers, see our guides to Airwrap-style multi-stylers and stylers for short hair. Our hot air brush how-to explains the technique.

• You want a bouncy, smooth blow-dry and find a dryer and brush awkward.
• You have fine hair that needs lift at the root.
• You have shoulder-length to mid-length hair that dries reasonably quickly.
• You want to refresh second-day hair without washing.
• You want fewer tools on the dressing table.

Using both: the two-step routine

This saves time because the dryer removes most of the water quickly, and the brush, which is better at shaping, only does the last part. It also means the brush spends less time on each section, which keeps heat exposure down.

1. 1

   Towel-dry gently, squeezing rather than rubbing.

2. 2

   Rough-dry with a hair dryer on medium heat until the hair is about 70 to 80% dry.

3. 3

   Section the hair with clips.

4. 4

   Switch to the hot air brush and work section by section, lifting at the root and rolling through to the ends.

5. 5

   Finish each section with a cool shot or the cool setting to set the shape.

Note:Keep any heated tool moving and use a heat protectant on fragile or coloured hair. Unplug tools when not in use.

Frequently asked questions

Can a hot air brush replace a hair dryer? For short to medium hair, often yes. For long or thick hair, drying from soaking wet with a hot air brush alone takes much longer, so most people rough-dry first.

Is a hot air brush gentler than a dryer? Not automatically. It holds hair closer to the heat source. Use a lower heat setting, keep it moving and avoid going over the same section repeatedly.

Can I use a hot air brush on wet hair? Most work best on damp hair. Check your model's manual, as some are designed to start from wet and others are not.

Is a multi-styler a hot air brush? Multi-stylers like the Dyson Airwrap include hot air brush heads alongside curling barrels and a dryer attachment, so they cover both jobs.