Naughty knots getting stuck in your guides are no longer a problem. With UV Knot Sense you can smooth and strengthen your newly tied nail knots immediately. After application, it dries instantly with LoonÕs UV Mini Lamp, UV Power Light or with direct sunlight. Also works great for repairing damaged flies and completing household projects. **PRODUCT TIP** Apply all UV curable products in full shade or inside, then let the application cure in full, direct sunlight. These products will not cure through a window