The Agent X Fly Line Dressing from RIO Fly Lines is specifically formulated to enhance the performance of all modern fly lines. Treated fly lines will cast farther, remain clean longer and float higher than untreated lines. RIO’s proprietary Agent X formulation features lubricants used in the new Agent X fly lines that will keep the line slick and clean longer than competitors’ fly line dressings. It is easy to apply with a soft cloth. Allow 30 minutes or so to dry before buffing off.