Tourna Grip Rx Instant Grip Enhancer Grip Enhancement : Tourna Grip Rx Instant Grip Enhancer is a quick and effective solution to improve your grip on your racquet. This Silica-based solution repels sweat for an instant dry grip. Spread it on your hands or gloves for the best results. Shake before each use. Let dry to a light powdery film and apply more as needed. Washes off with soap and water and wont stain clothes. Non-toxic, biodegradable formula. Not for use near a flame or fire and keep away from eyes and children. Note: Product has shelf life of one year after seal is removed from top of container.