Loon Combo Pack - Blue Ribbon/Lochsa Lochsa 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.