If all you see glowing is just small bits I wouldn't worry about it. Some of the clothes I have will dang near blind you when viewed under a black light. Hold the light about 3 feet over the garment. Hopefully all you will see is a black piece of cloth. If your clothes have a slight glow I think you would be still be OK. I do not use UV killer (even though I have a bottle). The clothes I have that glow like neon do not get used for deer hunting.