With UV Knot Sense you can smooth & strengthen your newly tied knots immediately. After application, it dries instantly with Loon's UV Mini Lamp, UV Power Light or with direct sunlight. Also works great for repairing damaged flies & completing household projects. Features Ideal for coating knots for strength Smoothes knots to easily slide through guides Cures soft & pliable Instantly cures with sunlight or UV light Quickly repairs damaged flies How To Use While shaded from the sun, apply enough UV Knot Sense to coat knots Rotate line or use applicator to form UV Knot Sense to desired shape Expose to sun light or use Loon's UV Mini Lamp or UV Power Light to cure In direct sun (or when using Loon's UV Lights) hardening should take Approx. 15 seconds Ideal Uses Strengthening knots Coating/repairing damaged flies