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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. 

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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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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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Million euros invested in hair research


Miles of hair tresses analysed


Months in development


Dyson engineers assigned to the project

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

  • Exclusive to dyson.ie
    Dyson Supersonic™ hair dryer Black/Purple, with black case

    Powerful digital motor. Designed for fast drying. Black case with purple stitching.

    6 accessories included See all Hide Click to learn more

    Black presentation case

    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

    Diffuser

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

    Storage hanger

    Non-slip heat mat

      €399.00
      Learn more
    • Dyson Supersonic™ hair dryer Iron/Fuchsia, with platinum bag

      Powerful digital motor. Designed for fast drying. Platinum storage bag

      6 accessories included See all Hide Click to learn more

      Smoothing nozzle

      Styling concentrator

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

      Diffuser

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

      Storage hanger

      Non-slip heat mat

      Platinum bag

        €399.00
        Learn more
      • Dyson Supersonic™ hair dryer Black/Nickel

        Powerful digital motor. Designed for fast drying.

        5 accessories included See all Hide Click to learn more

        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

        Diffuser

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

        Storage hanger

        Non-slip heat mat

          €399.00
          Learn more
        • The Dyson Supersonic™ hair dryer 23.75 karat gold

          Powerful digital motor. Designed for fast drying. In 23.75K gold.

          6 accessories included See all Hide Click to learn more

          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

          Diffuser

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

          Storage hanger

          Non-slip heat mat

          Red Gesso presentation case

          Red 'Gesso' presentation case developed by James Dyson

          €499.99
          Learn more

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        Dyson Supersonic™ hair dryer on a bed

        Give guests an exclusive styling experience, in the comfort of their own room.

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        Direct from Dyson

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