Designed for use with all our Micro Thin and Low Diameter fly lines to create extreme line speed, tighter loops, improved accuracy and greater distance. Specially formulated, non silicone compound that won't affect the varnish / finish on cane, carbon and glass fly rods. Using Lineslik is the single most effective thing you can do to increase the life of your fly line. Apply to the entire line to maintain and add extreme slickness. Add to the tip of your line to aid buoyancy.