48mm vs 70mm Ceramic Round Brush: Which Size for Your Hair?
By Kent Brushes | The World's Finest Hairbrushes & Combs | Published: 2026-11-04
Category: Jämförelser
Compare the AirHedz 48mm and Kent Create 70mm ceramic round brushes by hair length, curl size and blow-dry control, with clear trade-offs for each.
Quick answer
Choose the 48mm AirHedz AH15G for short to mid-length hair, long bobs and tighter curls; choose the 70mm Kent Create KCR9 for medium to long hair when you want volume, root lift and a smooth, straight blow-dry.
Why barrel diameter changes the result
Barrel size sets the diameter of the curl and how much hair each pass can hold. A smaller barrel wraps hair more tightly for defined bends and curls; a larger barrel smooths more surface area per section for lift and straight finishes. Both brushes here use a heat-retaining ceramic head, so the size difference is the main decision, not the material.
Where the 48mm brush wins
The AirHedz 48mm is designed for short to mid-length hair, straightening long bobs or creating curls. Its smaller barrel gives you more control around the face and ends, and the ceramic head heats faster and holds temperature longer for quicker, more accurate passes. The trade-off is that it holds less hair per section, so long or thick hair needs more sections and more time.
Where the 70mm brush wins
The Kent Create 70mm suits all hair types that are medium to long, and is built for curls, volume, root lift and a smooth, straight blow-dry. The larger ceramic head covers more hair at once, which speeds up smoothing and creates a looser, bouncier wave rather than a tight curl. The trade-off is less precision on short layers and a bulkier feel if you are used to a small radial brush.
The honest trade-off: speed vs control
Neither size is better in every case. The 48mm gives control and definition but takes longer on long hair; the 70mm gives speed and volume but can overwhelm short cuts. If your hair is between lengths, match the brush to the style you wear most, not to the hair you occasionally have.
Trade-offs at a glance
- Curl definition: The 48mm barrel creates tighter, more defined curls; the 70mm creates looser, bouncier waves. Pick based on the curl size you actually want to wear, not on which sounds more versatile.
- Blow-dry speed: The 70mm moves more hair per pass for faster smoothing on medium to long hair; the 48mm needs more sections on the same length.
- Control on short hair: The 48mm is easier to manoeuvre around short layers and long bobs; the 70mm can feel bulky and imprecise there.
- Root lift and volume: The 70mm is the stronger choice for lifting roots and building volume through medium to long lengths; the 48mm adds volume in a smaller, more localised way.
Product facts
- Kent Create 70mm Ceramic Round Brush - KCR9: 70mm ceramic round brush intended for all hair types, medium to long in length, for curls, volume and root lift. The larger barrel covers more hair per pass, so medium to long hair dries smoother and fuller with fewer sections.
Kent Create 70mm Ceramic Round Brush - KCR9 - AirHedz 48mm Ceramic Round Brush - AH15G: 48mm ceramic round brush for short to mid-length hair, straightening long bobs or creating curls. The smaller barrel wraps tighter for defined curls and gives more control around short layers and face-framing pieces.
AirHedz 48mm Ceramic Round Brush - AH15G
Which size fits you?
Best for
- Short to mid-length hair and long bobs (48mm AirHedz AH15G)
- Tighter curls and detailed face-framing styling (48mm AirHedz AH15G)
- Medium to long hair that needs volume, root lift and a smooth blow-dry (70mm Kent Create KCR9)
Not for
- Long, thick hair if you want the fewest sections possible (choose the 70mm instead)
- Very short crops or pixie cuts where a large barrel feels unwieldy (choose the 48mm instead)
