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Comparison

Blow dryer brush vs blow dryer and round brush

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Short answer

A blow dryer brush dries and styles in one hand, so it is easier to learn and quicker for most people at home. A separate blow dryer and round brush takes two hands and practice, but gives more control over tension, airflow and finish, and dries thick hair faster from wet. Pick the brush for convenience, the dryer and brush for control.

Facts are taken from each Amazon listing. Prices are checked daily and shown with their date.

Verdict

Buy the Drybar Double Shot if you want an easy one-handed blowout with volume, or the ghd Duet Blowdry if you want to go from wet to styled at a steady low temperature. Buy the T3 AireLuxe set if you want the control of a dryer and round brush and have the patience to learn the technique.

This page is for anyone deciding whether to buy a one-piece blow dryer brush or stick with a dryer and a round brush. Both can give a smooth, voluminous blowout. The difference is in how they work in your hands, how fast they dry, and how much control you get over the finish. We compare the two approaches, then look at real options from our guides using only their Amazon listings: the Drybar Double Shot and ghd Duet Blowdry on the brush side, and the T3 AireLuxe dryer set, which includes a round brush, on the other.

How each approach works

A blow dryer brush is a hot air brush: a motor and heater in the handle push air out through vents in a round or oval brush head. You brush through a section and it dries and shapes at the same time. One hand holds the tool and the other guides hair.

A blow dryer and round brush splits the job. One hand holds the brush to create tension and shape, the other aims the dryer, usually with a concentrator, down the hair shaft. It is the classic salon blowout.

For a primer on hot air brushes, read what is a hot air brush.

  • 1 inShort hair, tight curls at the ends
  • 1.2 in / 30 mmShort to medium hair, defined curls
  • 1.5 inMedium hair, smooth ends with some bend
  • 1.6 in / 40 mmMedium to long hair, loose waves
  • 2 in ovalLong hair, smooth blowout with volume
Common hot air brush and barrel diameters, drawn to the same scale. Smaller sizes give tighter curls and more lift.

Spec table: listed options for each approach

All rows come from the Amazon listings. Prices are listing prices at the time of writing.

  • Listing price

    Drybar Double Shot
    $155.00
    ghd Duet Blowdry
    $321.99
    T3 AireLuxe set
    $224.99

  • Type

    Drybar Double Shot
    Oval blow-dryer brush
    ghd Duet Blowdry
    2-in-1 blow dryer brush
    T3 AireLuxe set
    Ionic dryer with paddle and round brush

  • Head or brush

    Drybar Double Shot
    2.4 inch oval
    ghd Duet Blowdry
    Elliptical barrel, heated bristles
    T3 AireLuxe set
    2.5 inch round brush and paddle brush included

  • Heat

    Drybar Double Shot
    Not stated
    ghd Duet Blowdry
    Consistent 248°F
    T3 AireLuxe set
    5 heat settings plus cool shot

  • Speed

    Drybar Double Shot
    Not stated
    ghd Duet Blowdry
    Not stated
    T3 AireLuxe set
    3 speed settings

  • Ions

    Drybar Double Shot
    Ionic technology
    ghd Duet Blowdry
    Not stated
    T3 AireLuxe set
    10 million negative ions per second

  • Use from wet

    Drybar Double Shot
    After towel-drying
    ghd Duet Blowdry
    Designed for wet hair
    T3 AireLuxe set
    Yes, standard dryer
From the Amazon listings for each product

Convenience: where the brush wins

The main reason people buy a blow dryer brush is that it takes one hand. You do not have to coordinate a dryer and a brush, which is the hardest part of a salon-style blowout. Drybar describes the Double Shot as combining the hot air of a blow-dryer with the structure of a round brush for a smooth, shiny blowout with volume in one step.

The ghd Duet Blowdry goes a step further and is designed to take hair from wet to blow dried in one step at a consistent 248°F. If you dread blowouts, a brush is the easier route. See how to use a hot air brush and hot air brush on wet hair.

  • One-handed, easier to learn.
  • Fewer tools on the counter.
  • Good root lift with an oval head.

Control and finish: where the dryer and brush win

A separate dryer usually moves more air than the small motor in a brush handle, so it rough dries long or thick hair faster. You can also choose any brush size, swap a concentrator for a diffuser, and change tension by hand. That control is why stylists still use the two-tool method for the sleekest finishes.

The T3 AireLuxe set is a straightforward way to try this method. It pairs an ionic dryer with five heat and three speed settings and a lock-in cool shot with a paddle brush for detangling and a 2.5 inch round brush for volume. Our how to blow dry hair straight page walks through the technique.

  • Concentrator

    Narrow jet for smoothing with a brush

  • Diffuser

    Wide, soft spread for curls

  • Wide-tooth comb

    Air flows through the teeth to stretch curly and coily hair

  • Smoothing nozzle

    Wide, flat, gentler airflow for finishing

Common dryer attachments and the airflow each one makes. Which ones come in the box varies by model.

Which suits your hair

Short to medium hair. A blow dryer brush is often the easier pick; pick a head size that matches your length. See hot air brush size guide.

Long, thick hair. Rough dry with a dryer first, then use either a round brush or a blow dryer brush to finish. A brush alone can be slow from soaking wet.

Fine hair. A blow dryer brush with an oval head gives easy root volume. Keep heat moderate.

Curly hair you want to keep curly. Neither is ideal. Use a dryer with a diffuser. See how to diffuse curly hair.

For picks in each category, see best blow dryer brushes and best hair dryers.

See the best blow dryer brushes →

Frequently asked questions

Is a blow dryer brush better than a blow dryer? It is easier and more convenient for most people. A blow dryer with a round brush gives more control and usually dries thick hair faster. Better depends on your hair and skill.

Can I use a blow dryer brush on soaking wet hair? Most work best after towel-drying. Drybar says to towel-dry first. The ghd Duet Blowdry is designed for wet hair. Check the instructions for your model.

Is a blow dryer brush more damaging? Not by default. The brush is in direct contact with hair, so heat setting matters. Use the lowest effective heat and a heat protectant. The ghd Duet Blowdry lists a consistent 248°F.

Do I still need a hair dryer if I buy a blow dryer brush? Many people keep one for rough drying long or thick hair, or for diffusing curls. If your hair is short to medium, a brush can cover most days.

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