Goldwell's StyleSign Root Boost Spray delivers instant root lift, adding impressive volume, body, and bounce to your hair. Designed to target the roots directly, this powerful spray gives your hair a visibly fuller and more vibrant appearance. It's suitable for a wide range of hair types and concerns—including coloured, chemically treated, damaged, dull, dry, frizzy, fine, limp, and even oily hair. The advanced formula not only boosts thickness and volume by up to 100% but also provides long-lasting humidity and frizz protection for up to 72 hours. Plus, it includes thermal protection to shield hair from heat damage during styling.