Schwarzkopf Osis+ Topped Up Gentle Hold Mousse - 200ml Gently lock in your style for longer with the Schwarzkopf Professional Osis+ Topped up gentle hold mousse for a a fast-drying style essential that keeps hair in place, great for everyday use. The Osis+ Mousse offers each strand volume and love. Whether you’re looking to boost the bounce of your blow-dry, or keep your curls tight, this daily style tool is perfect for those whose hairstyle needs longevity.