The round hair brush Balmain Hair Couture Round Brush 25 mm It's perfect for styling hair while drying. An indispensable ally for daily drying, it will help you create a voluminous, airy hairstyle that will garner admiration and success. Simply slowly comb through individual strands while letting the hot air from the hairdryer blow over them. In one go, you'll achieve smooth, soft hair that's also incredibly manageable. tempo a full and airy hairstyle.