"In addition to shaking flies in the bottle, I dip my finger in the bottle and use the dust to separate and desiccate cdc wings with my fingertip. After each fish I wash off the fly and apply the dust and my cdc flies will float all day." - Devin
Loons flagship powder desiccant. Best used after your fly has started to sink or has been eaten by a fish. Dry your fly off using your shirt, dry fly towel etc., close it in the container, shake and you're back in business!