In-depth review
Dyson Supersonic Review (2027)
In-depth review of the Dyson Supersonic: 110,000 rpm motor performance, heat control, attachments, and whether it is worth it in 2027.
Dyson Supersonic
The benchmark: 110,000 rpm motor with intelligent heat control.
Our verdict
The Supersonic is the best dryer you can buy, and the hardest to justify. Its 110,000 rpm motor and 40-times-per-second heat monitoring deliver measurably faster drying with less heat exposure than anything else here. But the Conair InfinitiPRO dries hair for a fraction of the price. Buy the Dyson if you style daily and value your hair's long-term condition; buy the Conair if you dry twice a week.
What we like
- V9 digital motor spins at 110,000 rpm for exceptional airflow from a compact body
- Intelligent heat control measures air temperature 40 times per second to prevent heat damage
- 4 heat settings including cold shot, plus 3 speed settings for precise control
- Magnetic attachments (5 included) snap on and rotate during styling
What to watch out for
- Premium price, several times the cost of competent alternatives
- No ionic generator switch; smoothing relies on airflow design
- Attachment set is generous but adds storage bulk
What owners report: Dyson Supersonic
Synthesized from recurring themes in long-term owner feedback.
Most praised
- Intense airflow from a compact body dries fast without relying on extreme heat
- Heat that is measured constantly gives confidence on color treated hair
- Magnetic attachments snapping on and rotating mid style feel effortless
Common complaints
- Managing and storing a generous attachment set takes dedicated drawer space
- The premium price is several times what a competent dryer costs
- Smoothing depends on airflow design rather than a switchable ionic feature
Who it is for
Daily stylers, people with long or thick hair, and anyone prioritizing hair health over budget. Not for occasional users who will not notice the difference over a competent 1875-watt dryer.
Motor and drying speed
The V9 digital motor spins at 110,000 rpm, roughly 6 times faster than a conventional dryer motor, and Dyson's Air Multiplier design amplifies that into a high-velocity, focused airstream. In expert testing, the Supersonic consistently dries hair faster than 1875-watt conventional dryers despite drawing less power, because airflow, not wattage, does the drying. For thick hair, the time savings are dramatic: what takes 15 minutes with a standard dryer can take under 10.
Heat control
The standout engineering is the glass-bead thermistor measuring air temperature 40 times per second, feeding a microprocessor that regulates the heating element. This prevents the temperature spikes that occur in conventional dryers when airflow momentarily drops, such as when the intake nears fabric. With 4 heat settings including a true cold shot, you get precise control from gentle to hot. For color-treated or fine hair, this protection is the strongest argument for the price.
Attachments and handling
Five magnetic attachments come in the box: styling concentrator, smoothing nozzle, diffuser, gentle air attachment, and wide-tooth comb. The magnets let attachments rotate mid-style without detaching, a small detail that matters during real styling. The motor sits in the handle rather than the head, improving balance, and at a compact size with a 9 ft cord it handles better than its power suggests. The main handling complaint is the small filter cage, which needs regular cleaning to maintain airflow.
Key specifications
- Motor speed
- 110,000 rpm (V9 digital motor)
- Heat settings
- 4 (including cold shot)
- Speed settings
- 3
- Attachments
- 5 magnetic (concentrator, diffuser, brushes)
- Cord length
- 9 ft
Also consider
Shark SpeedStyle Pro
Salon speed at a mid-range price.
Why consider it: Choose the Shark if you want near-Dyson drying speed for thick hair at a mid-range price.
- Heat settings: 3 plus cold shot
- Airflow settings: 3
Conair InfinitiPRO
1875 watts of proven drying power for less.
Why consider it: Choose the Conair if you want competent 1875-watt drying and cannot justify the premium.
- Wattage: 1875 watts
- Heat settings: 3
Research-based assessment. TrueGear has not hands-on tested this product; this evaluation synthesizes manufacturer specifications, retailer documentation, and published expert reviews.
Questions, answered
Is the Dyson Supersonic worth the money?
For daily stylers with long, thick, or color-treated hair: yes, the speed and heat protection pay off in hair condition over years. For occasional use, a good 1875-watt dryer like the Conair gets you most of the way there.
Does the Supersonic work for curly hair?
Yes, the included diffuser is well designed, spreading airflow to define curls without frizz. Use low heat and low speed, and the magnetic diffuser stays put better than friction-fit alternatives.
How do I clean the Supersonic filter?
The filter cage twists off the base of the handle. Wipe the mesh with a dry cloth monthly; clogged filters reduce airflow and trigger the thermal cutout. Dyson includes guidance in the manual.