At depths as shallow as a few feet, even bright flies can appear dull and disappear into the background in the dark underwater world. Loon Fluorescing Hard Head performs just like Hard Head Clear, and takes the UV light that is available underwater and reflects it as a color more visible to fish.
It's definitely florescent! Put it under the UV torch and it glows like a Firefly. Will definitely add more color to those attractor nymph patterns, such as a confetti sexy Walt's
Used Sally Hanson's hard as nails for a long time. Never again. Only product going on my flies.
Have not used it yet