The best gel floatant for all dry flies, including those with CDCLochsa is a premium all-around gel floatant that even works on CDC. It wont mat dry flies made with CDC and is perfect for treating any type of feathers, hair, hackle, or yarn. Lochsa will provide maximum floatation without the slightest hindrance on appearance. It is silicone based, and wont melt in the heat or harden when its cold.-Premium dry fly gel floatant-Temperature stable-Silicone based-Will not leave oil slick on water-Treats CDC-1/2 ozWARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov