Black Magic Wax is a revolutionary carbon based wax formulated specially for jack blades. After cleaning jack blades with a fine girt abrasive pad to give “tooth” to their surface, heat blades JUST ENOUGH to melt Black Magic onto your blades. With every additional application will develop a smoother, more durable layer than regular bees wax could ever provide. Initially, several applications are recommended. Re-apply as needed approximately one ounce puck.