Olivia Garden is one of the most trusted names in professional brushwork, best known for thermal round brushes built for fast, smooth, salon-quality blow-dries. At Hairco we stock the Blowout round-brush ranges in barrel sizes from 15mm to 65mm, so you can match the brush to the client, the length and the finish. This guide explains the ranges, how to choose a barrel size, and how to get the most from them.
Why Olivia Garden brushes?
A professional thermal round brush does three things a cheap brush cannot: it heats evenly so the barrel works with the dryer to set the hair, it grips and tensions cleanly for a smooth cuticle and shine, and it survives constant salon use. The result is a faster blow-dry, less heat passing through the hair, and a finish that holds. Browse the full Olivia Garden range.
The Olivia Garden Blowout ranges we stock
Essential Blowout (Classic)
The reliable all-rounder — an even-heating ceramic and ion round brush for everyday blow-drying, smoothing and volume. A sensible first choice for a salon trolley and the range to standardise on across a team. Stocked from 25mm up to 65mm.
Expert Blowout Shine
Built for a high-shine, polished finish, the Shine series is the one to reach for on smooth, glossy blow-dries and finer hair where a sleek cuticle matters. Stocked from 15mm up to 55mm.
Expert Blowout Speed
Designed to move air and dry faster, the Speed series suits thick, dense or long hair and busy back-to-back days where drying time is everything. Stocked from 20mm up to 55mm.
Barrel size guide
Barrel size controls the balance of curl, volume and smoothing — smaller barrels bend and curl, larger barrels smooth and add root lift:
- 15–20mm: short hair, fringes, men's styling and tighter movement or curl.
- 25–35mm: short to mid-length hair; bend, body and everyday volume.
- 45mm: mid-length hair; the all-purpose size for smoothing with volume.
- 55–65mm: long and thick hair; big smooth blow-outs, sleek finishes and strong root lift.
As a rule, the longer the hair, the larger the barrel — the hair needs to wrap the barrel at least once for tension and heat to do their job.
How to choose the right brush
Start with the finish the client wants, then the length. For a sleek, glossy result, choose the Shine series in a larger barrel; for fast drying on thick or long hair, choose Speed; for a dependable everyday brush that does a bit of everything, the Essential Blowout Classic is the safe pick. Most stylists end up with two or three sizes rather than one — a smaller barrel for shorter clients and detail, a 45mm workhorse, and a large barrel for long-hair blow-outs. For where round brushes sit alongside the rest of your kit, see our salon styling tools guide and how to choose salon styling tools.
Getting the most from them
Work in clean sections, dry off excess moisture to around 80% before brushing, and keep the dryer nozzle following the brush down the hair shaft for a smooth cuticle. Pair a good brush with a quality dryer — see our guide to choosing a Parlux hairdryer. To keep brushes performing, remove shed hair after each use, wash occasionally in warm soapy water, and dry fully before storing so the barrel and bristles stay in good condition.
Frequently asked questions
What are Olivia Garden brushes used for?
They are professional thermal round brushes used mainly for blow-drying — smoothing, adding volume and creating movement, with a faster, shinier finish than a standard brush.
Which Olivia Garden barrel size should I choose?
Smaller barrels (15–25mm) for short hair and curl; 35–45mm for mid-length volume and smoothing; 55–65mm for long hair and big smooth blow-outs.
What is the difference between the Shine and Speed ranges?
Shine is built for a sleek, high-gloss finish; Speed is built to dry hair faster, which suits thick, dense or long hair and busy salons.
Are Olivia Garden brushes good for fine hair?
Yes — a smaller-to-mid Shine barrel gives fine hair smoothness and shine without overloading it; use gentle tension and avoid oversized barrels on very short layers.
How do you clean a round brush?
Remove shed hair after each use, wash occasionally in warm soapy water, rinse and dry fully before storing.
Browse the full Olivia Garden brush range and more professional brushes at Hairco & Beauty — trade prices and next day UK delivery.
Written by Charlotte Read, Content Writer at Hairco & Beauty. Charlotte has over six years' experience in professional hair and beauty, and our guides are informed by colleagues with 100+ years of combined salon experience and by insight from the trade customers we supply. More about our content.
