High n Dry's Sighter Wax is designed for on the water use and will allow you to mark your leader and tippet with various colors to make a mobile sighter. You can remove and reapply your sighter wax to adjust for depth and/or to provide you additional visibility to help spot takes while Euro nymphing. To remove or adjust the color on your line, simply wipe it away with a cloth. The Sighter Wax can also be used to add color to hard to see dry flies or strike indicators. Like all our products, the Sighter Wax is 100% environmentally friendly and odorless.