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Hair samples on washing line

The engineering story

A 1,010-mile journey. To understand the science of hair.

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James Dyson holding motor

"Hair dryers shouldn’t damage hair. With our technology, we knew we could do better."

James Dyson

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Hair tresses being tested for the Dyson Supersonic™ hair dryer.

Testing the water.

To understand how to look after hair, we dug deeper into its hydrophobic properties. We found that damaged hair absorbs water more quickly than healthy hair, which can weaken it. 

PLAY
Discover the engineering story behind the Dyson Supersonic™ hair dryer. 00:23

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Vintage and competitor hair dryers

Hair dryers haven’t changed much since the ‘60s.

Conventional hair dryers were being held back by big, bulky motors. And with extreme heat for styling, could cause irreversible damage to hair. We weren’t willing to accept convention.

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Dyson Supersonic hair dryer disassembled in lab

1,010 miles of hair. 103 specialists. One purpose.

Straight, wavy, coiled, curly. 1,010 miles of real hair went through our purpose-built labs. Our specialist team of trichologists, engineers and stylists looked at everything from airflow dynamics to hair’s cellular structure, to understand thermal, mechanical and chemical damage, and their effect on hair health.

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Hair strand under microscope

Damage can be invisible. But not to us.

We found that damaged hair doesn’t always look it. Over time, extreme heat affects the cortex, making hair weak, brittle and easier to break. Sustained cuticle damage drastically reduces hair’s ability to reflect light, affecting shine. We had to find a way to dry without extreme heat.

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"Our testing showed a clear correlation between healthy and shiny hair. To keep hair looking healthy, it has to be protected from extreme heat."

Clare Smith

Dyson Research Scientist
Dyson Supersonic hair dryer technology cutaway

Staying cool.

Temperatures above 150°C cause irreparable damage, so we developed Intelligent Heat Control. Adding a glass bead thermistor in front of the heating element meant we could measure the exit airflow temperature 20 times every second, and prevent temperatures exceeding 150°C.

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Dyson Supersonic hair dryer side view lab test

Powerful airflow. Controlled heat.

We found that effective – and safe – drying requires controlled heat balanced with powerful air. Only the Dyson digital motor V9 had the power to dry hair fast, without relying on extreme heat. And because it’s so small, it could fit in the handle, allowing a better balance in the hand.

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Dyson Supersonic hair dryer prototypes

Fail. Fail again. Fail better.

We built 600 prototypes, 599 of them failures. But each one taught us something: how we could make it better. Every iteration was an improvement. Every prototype closer to a revolutionary invention.

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Hair dryer front view

Dyson Supersonic™ hair dryer.

Engineered from the inside out, with hair science at its core, the Dyson Supersonic™ hair dryer redefines haircare. Four years of development have put an end to extreme heat damage. For good.

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Choose your model

  • Dyson Supersonic™ hair dryer

  • Dyson Supersonic™ hair dryer

  • Free gift with purchase
    Dyson Supersonic™ hair dryer

    Powerful digital motor. Designed for fast drying

    2453 Reviews

    5 accessories included See all Hide Click to learn more
    Diffuser

    Disperses air evenly to simulate natural drying, helping to reduce frizz.

    Storage hanger

    Non-slip heat mat

    Smoothing nozzle

    Dry and style your hair at the same time with gentle, low-velocity airflow

    Styling concentrator

    Style your hair one section at a time with precise, controlled airflow

    • Add a free display stand in the next step
    €399.99
    Add a free display stand in the next step
    Add a free display stand in the next step
    Add to basket
    Learn more
  • Dyson Supersonic™ (Fuchsia/Nickel) hair dryer with styling set.

    Powerful digital motor. Designed for fast drying

    4 Reviews

    5 accessories included See all Hide Click to learn more
    Storage hanger

    Styling Concentrator

    Diffuser

    Smoothing Nozzle

    Non-slip heat mat

      €399.99
      Learn more

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    Compare

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