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 won&&';;t 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 won&&';;t melt in the heat or harden when it&&';;s cold. -Premium dry fly gel floatant-Temperature stable-Silicone based-Will not leave oil slick on water-Treats CDC-1/2 oz