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

Drybar Buttercup vs Dyson Supersonic

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

The short answer

Dyson Supersonic comes out ahead by a narrow margin (4.5 vs 4.7). The gap is mostly about users who want the fastest, quietest, most thermally-protective drying — read the strengths below before deciding.

Drybar Buttercup
Ranked #4 in Best Fast-Drying Hair Dryers
Drybar Buttercup
$195

The Buttercup is the salon-tech pick — Drybar's ionic dryer used in their salons. Best for buyers who trust the Drybar brand.

Strengths
  • Salon-grade ionic technology
  • Cool shot button locks style
  • Multi-attachment included (concentrator + diffuser)
Watch-outs
  • Heavier than the Shark
  • Plastic finish wears
  • No magnetic attachments
Dyson Supersonic
Higher ratedRanked #1 in Best Fast-Drying Hair Dryers
Dyson Supersonic
$429

The Supersonic is the best-overall pick — Dyson's flagship dries hair in 7 minutes with intelligent heat protection.

Strengths
  • 7-minute drying time — fastest in this lineup
  • Notably quiet for the power
  • Intelligent heat control prevents damage
Watch-outs
  • $429 — most expensive pick
  • Heavier than typical dryers
  • Replacement attachments pricey

How they stack up

Drybar Buttercup

Salon brand. Ionic tech. Heavier than Shark.

Dyson Supersonic

Fastest drying. Most expensive. Quietest premium pick.

Specs side-by-side

SpecDrybar ButtercupDyson Supersonic
TechIonic
AttachmentsConcentrator + diffuserMagnetic
Cool ShotYes
BrandDrybarDyson
Drying Time7 min
Heat ControlIntelligent
← See the full ranking of best fast-drying hair dryers