Why you'll love it extra strong hold. Maximises hair's volume and bounce. Natural shine. Reduces static and tames frizzy hair.   schwarzkopf say. Providing volume and natural shine, osis grip is an extra strong hold mousse that keeps even coarse hair in its place whilst protecting it from blow drying damage.. Why it's escentual the extreme hold mousse gives each strand a secure, strong hold and volume. Whether you want to boost the bounce of your blow dry or keep your curls tight, this daily style tool is perfect for those who need long lasting hairstyles. This quick drying formula accommodates a busy schedule. It is water free and has a smoothing anti static effect, keeping your style uncompromised throughout the day. To use, apply a small amount to damp hair, blow dry, and style as usual.