UV Clear Fly Finish: comes in THIN and THICK formulas. UV Clear Fly Finish is for those who believe "five minutes to cure is five minutes too long." No mixing or waiting is required, and it remains workable until exposed to direct sunlight or Loon's UV lamps, at which point it will cure in a matter of seconds. The possibilities are endless! It is an excellent choice for coating bodies on tiny midges, adding strength and structure to fur, feathers or hackle. It penetrates materials so efficiently that it even works as a substitute for head cement. Apply Fly Paint or Fly Finish to fly while indoors or shaded from the sun. Use the attached applicator and/or rotating vise to form into the ideal shape. Expose to sun light or use Hareline's Universal UV cure light. In direct sun (or when using Harelines UV Lights) hardening should take approximately 15 seconds.