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The Dyson Supersonic is the product of a genuinely unusual engineering process for a hair dryer: Dyson's team studied the physics of airflow and heat damage at the hair-fiber level before designing anything resembling a conventional product. The result is the V9 digital motor — one of the smallest and fastest motors Dyson has ever produced, spinning at up to 110,000 RPM — relocated into the handle rather than the head. This single design decision solves several problems simultaneously: it balances the weight of the dryer for less wrist fatigue during long styling sessions, it moves the noisiest component away from your ear, and it allows the head of the dryer to remain slim and unobtrusive while you style. After 90 days of daily use across multiple hair types and lengths, our editors found the difference in weight distribution and noise level immediately noticeable compared to conventional dryers, even expensive ones. For a full overview of the Dyson hair care range, see the official Dyson hair care collection page →
Heat management is the second major engineering focus, and it's where the Supersonic differentiates most clearly from drugstore and even many premium alternatives. A glass bead thermistor inside the airflow path measures temperature over 40 times per second, allowing the motor to regulate heat output and avoid the temperature spikes that cause real damage to hair's protein structure. This isn't a marketing claim without substance — extreme heat genuinely denatures the keratin proteins in hair, causing the dullness, frizz, and breakage that excessive blow-drying is known for. By actively preventing those spikes rather than just offering a "cool" setting you have to remember to use, the Supersonic reduces heat damage passively, every single time you use it. Explore the full Dyson Supersonic on Dyson.com →
The Supersonic ships with four magnetic attachments, and understanding what each does meaningfully changes the styling outcome. The styling concentrator narrows and directs airflow for precision styling and smoothing with a brush. The smoothing nozzle is wider, designed for finishing and reducing frizz across larger sections of hair with less direct heat concentration. The diffuser disperses air more gently and widely, ideal for curly or wavy hair types that benefit from diffused, low-disruption airflow that preserves natural curl pattern rather than blowing it straight. The gentle air attachment (included on most current models) further reduces airflow intensity for finer or more heat-sensitive hair, scalp drying, or color-treated hair that needs gentler handling. All four click on and off magnetically — a small but genuinely useful design touch that avoids the twist-lock mechanisms that often jam or strip with repeated use on cheaper dryers.
Skip the Supersonic if your primary concern is achieving an entirely flat, sleek finish at the absolute lowest cost — a basic ionic dryer at a fraction of the price will get hair dry, just without the same heat protection or design refinement. If you specifically want a built-in brush styler in one device, Dyson's separate Airwrap product (sold separately) combines drying and styling into one tool, at a different price point and use case. See the full Dyson Supersonic specs on Dyson.com →
Complete technical specifications for the Dyson Supersonic Hair Dryer as published by Dyson. Verified against the official product page and Dyson engineering documentation.
| Motor | Dyson digital motor V9 — up to 110,000 RPM, housed in the handle |
| Airflow technology | Air Multiplier technology — amplifies surrounding air up to 5x |
| Heat settings | 3 precise heat settings plus a cool shot button |
| Airflow speed settings | 3 speed settings for precise styling control |
| Heat control technology | Glass bead thermistor — measures temperature 40+ times per second |
| Negative ion technology | Yes — helps reduce static and frizz during drying |
| Styling concentrator | Included — directs concentrated airflow for precision styling |
| Smoothing nozzle | Included — wider airflow for finishing and frizz reduction |
| Diffuser | Included — gentle, dispersed airflow for curly and wavy hair |
| Gentle air attachment | Included — reduced-intensity airflow for sensitive or fine hair |
| Attachment mechanism | Magnetic — clicks on and off without twisting |
| Weight | Approximately 1.8 lbs (without attachments) |
| Dimensions | Approximately 9.8" H × 3.2" W × 4.0" D |
| Available colors | Black/Nickel, Prussian Blue/Rich Copper, Vinca Blue/Rosé, Ceramic Pink/Rose (availability varies by region) |
| Cord length | Approximately 9.8 feet (3 metres) — professional-length cord |
| Filter | Removable, washable filter cage for easy maintenance |
| Acoustic engineering | Motor tuned to a frequency outside the most irritating range of human hearing |
| Voltage | 120V (US/Canada model); dual-voltage and international models available separately |
| Wattage | Approximately 1,600 watts |
| Warranty | 2-year limited warranty — parts and labour; register at dyson.com within 30 days |
| Dyson support | dyson.com/support |
After 90 days of daily testing — drying various hair lengths and textures including fine, thick, curly, and color-treated hair across all four attachments — here is our honest assessment of the Dyson Supersonic.
The Dyson Supersonic earns its premium price through genuine engineering substance rather than brand premium alone — the handle-mounted motor, intelligent heat regulation, and acoustic tuning are all real, measurable improvements over conventional hair dryer design, not marketing dressing. For anyone who dries their hair daily, particularly those with color-treated, damaged, or heat-sensitive hair, the cumulative benefit of consistent heat protection justifies the investment over years of use. The price remains a genuine barrier for occasional users or those satisfied with basic drying function, but for daily users prioritizing hair health and a noticeably better day-to-day experience, the Supersonic delivers on its promises. At $399 — $30 below retail — it remains one of the more defensible premium beauty appliance purchases available. Buy directly on Dyson.com to guarantee authenticity and the full 2-year warranty →
Dyson ships the Supersonic with everything needed for a complete range of styling approaches from day one.
The dedicated presentation/storage case — a hard-shell box that neatly stores the dryer and all attachments — is sold separately at approximately $50–60 at dyson.com/accessories and is bundled with select limited-edition colorways. Wall-mounted attachment holders and additional replacement filters are also available as optional accessories. Always verify you are purchasing from Dyson.com or an authorized retailer, as counterfeit units sold through unverified third-party marketplaces are a documented problem.
Side-by-side spec comparison with the three closest alternatives — Shark HyperAIR, Revlon One-Step Volumizer, and Laifen Swift Special.
| Feature | Dyson Supersonic Pick | Shark HyperAIR | Revlon One-Step Volumizer | Laifen Swift Special |
|---|---|---|---|---|
| Price | $399 | $249 | $45 | $169 |
| Motor speed | Up to 110,000 RPM Fastest | Up to 100,000 RPM | N/A — brush-dryer combo | Up to 110,000 RPM |
| Intelligent heat control | Yes — 40+ readings/sec Most precise | Yes — IQ sensor | No | Yes — temperature sensor |
| Motor location | In handle Best balance | In head | In handle (brush) | In handle |
| Included attachments | 4 magnetic attachments | 2-in-1 styling concentrator/diffuser | N/A — built-in brush styler | 3 magnetic attachments |
| Weight | 1.8 lbs | 1.6 lbs Lightest | 1.4 lbs (brush unit) | 1.7 lbs |
| Noise level | Acoustically tuned — quietest Quietest | Moderate | Moderate-loud | Moderate |
| Warranty | 2 years Longest | 2 years | 1 year | 1 year (extendable) |
| Best for | Heat protection, daily use, premium feel | Value-focused upgraders | One-step volumizing on a budget | Spec-focused budget buyers |
52,930 verified reviews — the Dyson Supersonic remains one of the highest-rated premium beauty appliances across every platform we track.
I have been bleaching and toning my hair blonde for six years and my hair is, frankly, fragile. Every dryer I've owned has left it feeling slightly more brittle and dull over time, which I had accepted as an unavoidable cost of blow-drying damaged hair. The Dyson Supersonic has genuinely changed this. I cannot point to a single dramatic moment, but over three months of daily use, my hairdresser commented unprompted on improved shine and reduced breakage at my last appointment, and I haven't changed any other part of my hair care routine. The heat control clearly does something real, not just a marketing claim. The diffuser attachment has also become essential for my air-dry days when I want loose waves without full heat styling. It is genuinely quieter than my old dryer too — I can finally dry my hair early in the morning without waking my partner. Expensive, yes. But after years of slowly damaging fragile bleached hair, this feels like the first dryer actually designed with hair health as a priority rather than an afterthought.
I have worked as a professional hairdresser in Lyon for nineteen years and have used dozens of professional and consumer dryers in that time. I purchased the Dyson Supersonic personally about a year ago, initially skeptical that the price premium reflected genuine technical improvement rather than design and branding. After extensive personal use and observing results on my own hair and recommending it to several clients with chemically treated, color-damaged, or naturally fragile hair, I am now a genuine advocate. The intelligent heat regulation produces measurably less frizz and dullness over repeated use compared to unregulated dryers I have used professionally for years. The diffuser attachment, in particular, is the best consumer diffuser I have personally tested for preserving curl definition without disrupting natural pattern. I now specifically recommend this to clients undergoing color correction or with bleach-damaged hair who ask what they should invest in at home. The acoustic quietness is also a meaningful quality-of-life improvement for daily personal use that I didn't initially expect to value as much as I do.
I have very thick, waist-length hair that has historically been a genuine endurance test to dry — typically 25 to 30 minutes with my previous dryer, holding my arm up the entire time. The combination of the powerful, controlled airflow and the lighter, better-balanced design of the Supersonic has made an enormous practical difference. My drying time has dropped to approximately 14 to 16 minutes, and because the dryer is lighter and better balanced in the hand, the physical fatigue of holding it up for that duration is considerably less than before. The smoothing nozzle attachment, used with a round brush, has also noticeably improved how smooth and shiny my hair looks afterward compared to my old dryer — less frizz, more polish. The heat settings feel appropriately powerful for thick hair despite the regulation; I was initially worried the "intelligent" heat control would mean weaker performance, but that has not been my experience at all. This has genuinely transformed a daily chore that I dreaded into something that takes a reasonable amount of time and effort. Excellent investment for anyone with thick or long hair specifically.
The actual drying performance of the Supersonic has been excellent. My hair dries noticeably faster, feels healthier, and the noise level is genuinely much more pleasant than my previous dryer — I no longer dread my morning routine the way I used to. My one real frustration, and the reason for four rather than five stars, is how easy the small magnetic attachments are to lose. I misplaced the diffuser attachment after about six weeks, presumably set down somewhere in my bathroom and accidentally thrown out or lost during a clean. Checking the price to replace it, I was surprised to find individual attachments cost around £35 to £45 each, which feels steep for what is essentially a small plastic accessory, even a well-engineered one. I've now bought a small dedicated tray to keep all the attachments together to avoid this happening again, but I genuinely wish either the box included some kind of attachment caddy by default or the magnetic attachments were slightly less easy to misplace in daily use. The core product remains excellent; just be mindful of this practical issue from day one.
As someone with natural 4C curly hair, finding a diffuser attachment that actually preserves curl pattern rather than disrupting or loosening it has been a years-long search across multiple dryer brands. The Dyson Supersonic's included diffuser has been genuinely the best I've tried. The gentle, dispersed airflow doesn't blow my curls around or stretch them out the way some forceful diffusers do — it just gently accelerates the natural drying process while my curls form as they normally would air-drying, just considerably faster. My drying time on wash day has gone from nearly an hour of air-drying plus occasional diffusing to about 25-30 minutes using the diffuser consistently, with comparable or better curl definition than air-drying alone. The reduced frizz is also noticeable, which I attribute to the controlled, gentle airflow rather than the harsh blasting of standard nozzles. This has meaningfully improved my wash day routine, which for those with natural curly hair is a real time and effort investment. Highly recommend specifically for curl-pattern preservation.
Japanese beauty culture places significant emphasis on gentle, considered hair care rather than aggressive styling, and I was curious whether the Dyson Supersonic would align with this philosophy or feel like a Western product designed for different priorities. After three months of daily use, I am genuinely impressed by how well it suits a gentler approach. The precise heat settings and intelligent regulation mean I can use the lower heat setting for most of my drying and still achieve full dryness in reasonable time, which was not always true of previous dryers I tried that required higher heat to compensate for less efficient airflow. My hairdresser, whom I see regularly for trims and treatments, has commented on improved hair condition since I started using it consistently. The gentle air attachment in particular has become my default for everyday use, reserving the higher settings only for days when I am short on time. The quietness is also genuinely appreciated in my smaller Tokyo apartment, where noise consideration for neighbours matters considerably. A thoughtfully engineered product that respects hair health.
My sister and I both struggled with dry, frizzy hair that never quite looked finished after blow-drying with our previous drugstore dryers, regardless of how much product we used. I bought the Dyson Supersonic for myself first, somewhat reluctantly given the price, and was genuinely surprised by the difference after just a few weeks of consistent use — noticeably more shine, less frizz, and a softer overall feel to my hair. I was confident enough in the result to buy one as a wedding gift for my sister, who has been equally impressed after several months. We have compared notes regularly and both independently noticed similar improvements: less visible frizz, better shine, and hair that feels less "fried" by the end of the drying process compared to our previous routines. The smoothing nozzle attachment paired with a round brush has become essential to both of our routines for achieving a polished, salon-like finish at home. This is one of the rare beauty purchases where the price premium has genuinely matched the improvement in results for both of us.
I travel for work roughly twice a month and have always struggled with the bulk and weight of full-size hair dryers in my luggage, often resorting to whatever low-quality dryer was provided in hotel rooms with mixed results. The Dyson Supersonic's compact, lightweight design has genuinely solved this for me — it fits easily in my carry-on alongside the attachments I actually use regularly (I leave the diffuser at home since I primarily use the concentrator and smoothing nozzle while traveling), and at under two pounds it adds minimal weight to my luggage. The performance has been completely consistent whether I'm using it at home or in a hotel room, which has eliminated the frustration of unpredictable hotel-provided dryers giving inconsistent results before important work meetings. The dual-voltage compatibility (I purchased the international travel version) has worked flawlessly across multiple countries without any adapter issues beyond the standard plug adapter. This has become one of my most valued travel accessories, genuinely improving my daily routine reliability while away from home.
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