Description: Finally, an invention for all guitarists and bassists who experience sore fingertips from frequent playing. The Rock-Tips Liquid Callus formula is applied to the fingertips, and within just one minute, it forms a protective, durable surface that provides long-lasting protection (1-2 days) against further injury to the calluses. Even beginners, whose calluses are not yet fully developed, can play pain-free for longer with Rock-Tips. Rock-Tips is also capable of covering and repairing already damaged calluses. The liquid is non-toxic and can be washed off with soap and warm water. Single bottle containing 4 ml.