The barrel size you choose decides the kind of curl or wave you get — and the right size for you comes down to your hair length and the look you're after. Here's a simple guide.
The quick rule
- Smaller barrels = tighter curls and more lift. Great for shorter or finer hair.
- Larger barrels = looser, bouncy waves and big, soft volume. Great for longer hair.
By hair length
- Short hair (above the shoulders): smaller barrels grip shorter sections and add the most volume.
- Medium hair: a mix of small and medium barrels gives you flexibility — curls one day, waves the next.
- Long hair: medium and large barrels create that loose, bouncy blow-out bend without dropping out.
By the look you want
- Tight, bouncy curls: small barrels.
- Soft waves: medium barrels.
- Big, loose volume: large barrels.
Why a set beats a single size
Hair is rarely one-size-fits-all — you might want volume at the crown and looser waves through the lengths. That's why every Pro Blo set includes a range of detachable barrel sizes you can mix and match from one handle, so you're never locked into a single look.
Still unsure? Take our 90-second quiz and we'll match you to the right set. Ready to style? Read how to use a blow-dry brush set.
Find your fit. Take the quiz or shop all blow-dry brush sets.
