Rugby players use hand grip sprays to improve their grip on the ball, especially in wet conditions. These sprays provide an extra layer of grip and traction between the rugby ball and the players hands, allowing for improved accuracy in passing and catching. The sprays are either sticky adhesive solvent glues, adhesive wax, or products like Magic Grip spray. Some popular brands of hand grip sprays used by rugby players include Spin-iT Rugby Grip Spray, GripTec, and Griptec Hand Spray & Wax. These sprays are safe for skin contact and provide superior durability compared to traditional hand grip products.