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The 45mm Barrel Is Having a Moment — Here’s Why Australians & Brits Are Obsessed

Tight ringlets are out. Bone-straight blowouts are fading. What’s taking over right now — from Sydney to London — is softer, more lived-in hair: relaxed curls, voluminous waves, and that effortless “I woke up like this” finish. The tool making it happen? A 45mm thermal brush. Why 45mm Works for Everyone Barrel size determines curl shape. At 45mm, you’re in the sweet spot: large enough for soft, voluminous movement, defined enough for real shape and hold. It works on bobs and long layers, fine hair that needs lift, and thick hair that needs control. In Australia, the look is coastal and bouncy — lifted roots, natural movement, humidity-resistant hold. In the UK, it’s undone elegance — face-framing flips and soft waves that go from office to evening. Both markets want the same thing: one tool, multiple looks, no heat damage. 4 Looks You Can Create Lifted Roots + Relaxed Body — Roll inward at mid-lengths, focus heat at the root. Voluminous, bouncy, effortless. Face-Framing Curls — Sweep sections around the face outward for a soft, flattering frame. The UK’s go-to for “effortless chic.” Elegant Outward Flips — Roll ends outward as you brush through. Polished, classic, done in minutes. Silky Sleek Blowout — Brush straight through root to tip. Infrared heat smooths the cuticle as you go — glossy, frizz-free, no flat iron needed. Built for These Looks The Glamup SoftWave™ Infrared Styling Brush is designed around the 45mm XL barrel. Its 135mm extended length covers more hair per pass — less repetition, less heat exposure. Dual Infrared Technology (850nm for hold, 620nm for cuticle smoothing) works with your hair structure, not against it. Smart NTC Control ensures even 360° heat with no hot spots. The result: salon-quality curls at home, with hair that feels healthier after styling — not fried. → Shop the Glamup SoftWave™ — $95