Verdict
Head-to-head · Best Fast-Drying Hair Dryers

Dyson Supersonic vs Shark FlexStyle HD440

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Shark FlexStyle HD440 comes out ahead by a narrow margin (4.4 vs 4.5). The gap is mostly about Shoppers who want one tool that both dries fast and styles, especially anyone eyeing a Dyson Airwrap but unwilling to pay Airwrap money. — read the strengths below before deciding.

Dyson Supersonic
Ranked #2 in Best Fast-Drying Hair Dryers
Dyson Supersonic
3 sources2 derived$429.99as of Jul 1

The Dyson Supersonic is the benchmark fast-drying dryer, the one most others get measured against. TechGearLab scored it 86 out of 100, the top mark in their test group, praising its powerful, well-controlled airflow and handle-mounted motor. It is not always the single fastest in raw minutes; what nothing else matches is the combination of speed, low heat damage, balance, and quiet operation. The price is the only real barrier.

Strengths
  • Highest-ranked dryer in TechGearLab's lab testing (86/100), with airflow that cut drying time roughly in half versus a standard dryer
  • Digital V9 motor sits in the handle, so the tool is exceptionally well-balanced and light on the wrist during long blowouts
  • Intelligent heat control measures air temperature many times a second to keep the dryer from scorching hair
Watch-outs
  • Among the most expensive consumer hair dryers on the market at around $430
  • In one head-to-head test it took 30 minutes to fully dry thick hair versus 20 for the Shark HyperAIR, so it is not always the literal fastest
  • Replacement and accessory costs are high, and the proprietary attachments do not fit other brands
Shark FlexStyle HD440
Higher ratedRanked #1 in Best Fast-Drying Hair Dryers
Shark FlexStyle HD440
2 sourcesall derived$369.99as of Aug 1

The Shark FlexStyle HD440 does double duty: a genuinely fast dryer that also converts into a full multi-styler with auto-wrap curlers, widely regarded as the affordable Dyson Airwrap alternative. It carries a 4.4 out of 5 average on Shark's listing along with strong editorial reviews from TechRadar and others. As a pure dryer it trails the HyperAIR. No other tool here covers as much drying-plus-styling ground for the money.

Strengths
  • Doubles as a fast, high-airflow dryer and a full multi-styler with auto-wrap curlers, an Airwrap-style trick at a fraction of the price
  • Holds a 4.4 out of 5 average on Shark's own listing across its large review base
  • Heat-controlled ceramic regulates temperature 1,000 times per second to limit heat damage
Watch-outs
  • As a pure dryer it is less powerful than the dedicated HyperAIR, and TechRadar notes you dry to about 80% before styling
  • Fine or very straight hair may see auto-wrap curls fall to soft waves within hours
  • Heavier and bulkier in the hand than a simple dryer, and the diffuser is noticeably large

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

Dyson Supersonic

Faster and quieter than the Conair InfinitiPro 1875W and substantially better controlled, but the Shark HyperAIR HD120 matched or beat its raw drying time in one direct test at half the price. Against the Shark FlexStyle HD440, the Supersonic wins as a pure dryer while the FlexStyle wins on built-in styling.

Shark FlexStyle HD440

Unlike the Dyson Supersonic and Shark HyperAIR HD120, which are pure dryers, the FlexStyle HD440 converts into a multi-styler with auto-wrap curlers. It dries a touch slower than the HyperAIR HD120 but offers styling those dryers cannot, and it undercuts the Dyson on price while adding curling.

Specs side-by-side

SpecDyson SupersonicShark FlexStyle HD440
Wattage1600W1600W peak
MotorDyson digital motor V9 (handle-mounted)1650W
Heat Settings4 (incl. constant cold shot)
Airflow Settings3
AttachmentsFlyaway, styling concentrator, diffuser, smoothing nozzle, gentle air2x auto-wrap curlers, oval brush, paddle brush, diffuser, concentrator
Weight1.8 lbs4.5 lbs (kit)
TechnologyIonic, heat-controlledNo Heat Damage
Voltage110-120V120V
Dimensions3.1 x 3.8 x 9.6 inches; 1.8 pounds
MaterialMetal, Plastic
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