Buyer question · Hair Brush

What size round brush should you use for a blowout on medium-to-long hair?

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Ibiza Hair EX4 65 mm round brush

Our pick

Ibiza Hair EX4 Round Brush, 65 mm

EX4 / 65 mm
65 mmMedium-to-long hairCrown volumeBoar + carbon-fiber nylon
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Short answer

Ibiza Hair’s EX4 gives a concrete size reference: the maker lists it as a 65 mm round brush and says it is designed for volume, especially at the crown, on medium-to-long hair. So if that is your hair length and blowout goal, 65 mm is a maker-backed reference point rather than a generic size guess.

At a glance

Best for

  • Medium-to-long hair
  • Adding volume at the crown during a blowout

Skip it if

  • Your hair is short or you need tighter sections; Ibiza positions EX4 specifically for medium-to-long hair and crown volume.
  • You specifically want a pure-boar brush; EX4 mixes natural boar with heat-resistant carbon-fiber nylon.

What we like

  • The maker gives an exact 65 mm size instead of leaving diameter ambiguous.
  • Ibiza explicitly ties EX4 to medium-to-long hair and crown volume.
  • The extended cork handle is designed to be lightweight and easy to maneuver.

Good to know

  • This size is not the maker’s stated short-hair option; EX4 is specifically positioned for medium-to-long hair.

Why 65 mm is the source-backed size here

EX4 is 65 mm

Ibiza Hair lists the EX4 round brush at 65 mm.

The maker targets medium-to-long hair

The exact product page says EX4 is ideal for medium-to-long hair.

Its specific styling job is volume

Ibiza says EX4 is for volume and is especially suited to the crown.

The bristle mix adds structure

The maker mixes natural boar bristle with heat-resistant carbon-fiber nylon in the EX series.

How to use it

  1. Choose EX4 when your hair is medium to long and your styling goal is crown volume.
  2. Use the 65 mm EX4 as the round-brush size for that maker-defined fit.
  3. If your hair length or section-control goal differs, treat 65 mm as an EX4-specific reference point rather than a universal size rule.

Ibiza’s exact product page provides fit and size guidance rather than a numbered blowout tutorial, so this page does not invent a rotation, heat or airflow sequence.

Key details

Diameter
65 mm
Hair length
Medium to long
Primary fit
Volume; crown
Bristles
Natural boar + heat-resistant carbon-fiber nylon
Handle
Extended cork
Made in
Spain

Questions buyers ask

What diameter is the Ibiza EX4?

65 mm.

What hair length is it designed for?

Ibiza says medium-to-long hair.

What part of the blowout does Ibiza emphasize?

Volume, especially at the crown.

Is EX4 pure boar?

No. Ibiza mixes natural boar with heat-resistant carbon-fiber nylon.

What is the handle made from?

Ibiza describes an extended cork handle.

Where is EX4 made?

The maker says Spain.

The bottom line

For medium-to-long hair where crown volume is the goal, Ibiza Hair’s own size guidance gives a direct answer: EX4 is 65 mm and is built for that use case.

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How this page was made

Smoov Discovery wrote this page from the maker's own product information and retailer copy, listed below. We did not test the product ourselves. Nothing here comes from Amazon.

Sources

Photos: Maker (ibizahair.com).

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This page is published by Smoov Discovery and is promotional content for the Amazon listing it links to.

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