In-depth review
Revlon One-Step Root Booster Review (2027)
In-depth review of the Revlon One-Step Root Booster: 1.5-inch round brush drying for short hair, roots, and bangs. Distinct from the One-Step Volumizer.
Revlon One-Step Root Booster Round Brush Dryer
Compact 1.5-inch round dryer brush for root lift, bangs, and short layers.
Our verdict
The Root Booster fixes the category's blind spot: every famous oval volumizer is too big for short hair. This 1.5-inch round brush reaches roots, shapes bangs, and smooths bobs with ceramic ionic heat at a budget price. Long-haired users should treat it as a detail companion, not their main dryer.
What we like
- 1.5-inch round barrel reaches roots and short layers oval heads cannot
- Ceramic technology for even heat and less damage positioning
- Three heat settings with ionic frizz control
- Ideal size for bangs, bobs, and refreshing volume at the crown
What to watch out for
- Small barrel means many sections on long hair
- Round shape gives lift and curl rather than sleek oval smoothness
- Not a full-head dryer for dense, waist-length hair
What owners report: Revlon One-Step Root Booster Round Brush Dryer
Synthesized from recurring themes in long-term owner feedback.
Most praised
- The small round barrel reaches roots, bangs and short layers that oval heads bridge over
- Crown lift on second day hair takes minutes, which is exactly how most owners use it
- Bob wearers finally get a dryer brush scaled to their cut instead of fighting a full size oval
Common complaints
- Long hair owners face section after section on the small barrel
- The round shape delivers lift and bend rather than the sleek finish an oval gives
- It is a specialist, not the tool to dry a full head of dense long hair
Who it is for
Short to medium hair, bob and lob wearers, fringe stylers, and anyone adding root lift to a longer-hair routine.
Why the small barrel matters
At 1.5 inches the barrel wraps short sections fully, so bristles grip and tension forms, the precondition for smoothing and lift. It tucks under fringes, flips ends, and lifts crown roots that a 4-inch oval head simply bridges over.
Heat and finish
Ceramic technology with ionic conditioning across three settings produces a smooth, lifted finish with soft bend rather than oval sleekness. On its home turf, short layers and second-day crown refreshes, it outperforms tools costing three times more.
Scale limits
Physics applies: drying long, thick hair section by small section with a 1.5-inch barrel is slow. Pair it with a full-size volumizer or dryer for lengths, or choose a compact oval if one tool must do everything past shoulder length.
Key specifications
- Barrel
- Round, 1.5 in
- Heat settings
- 3 heat / speed settings
- Technology
- Ceramic with ionic conditioning
- Wattage
- 820W class
- Cord
- Swivel cord with ALCI plug
Also consider
Amika Hair Blow Dryer Brush 2.0
Updated oval brush with mixed bristles and a smaller, lighter body.
Why consider it: A compact oval that scales better to medium lengths.
- Barrel: Oval, compact 2.0 design
- Heat settings: 3 heat / speed settings
CHI Volumizer 4-in-1 Blowout Brush
Interchangeable-head system: oval, round, paddle, and nozzle in one handle.
Why consider it: Interchangeable round and oval heads if you want both sizes in one system.
- Attachments: Oval brush, round brush, paddle brush, nozzle
- Heat settings: Multiple heat / speed plus cool
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 this the same as the One-Step Volumizer?
No. The Volumizer is the large oval dryer brush covered in our hair-dryers topic. The Root Booster is a smaller 1.5-inch round brush for roots and short hair.
Can it add volume to long hair?
Yes, at the roots and crown specifically, which is where long hair needs it. Dry lengths with a larger tool.
Does it work on bangs?
It is one of the best formats for bangs: small barrel, controlled heat, and easy under-or-over rolling for the finish you want.