TMC Dry Magic are among those very few that actually works on flies tied with CDC. In it's class as a gel floatant it's simply the best.
Apply a small amount on your index finger and carefully stroke the cdc fibers, very little gel is needed on cdc. For flies tied with other kind of materials apply as normal and the effect is a longer floating fly compared to other gels out there.
Contain no harmful components for the user or environment.