I'm with kevin1, I've read the studies, and have used the products for over 10 years and have seen with my own eyes that UV Killer works and I have been busted by not using UV Killer. It's not a big hassle or expensive to use. The wash and spray combo cost me $10. There's enough spray to do 1 set of outer clothing and enough laundry detergent to last half a season or more. The spray you use once and it's done. It's funny that people will pay over $300 for a camo suit and not spend $10 to treat it one time. I also think it's funny that nearly all the hunting laundry soaps advertise NO UV BRIGHTENERS. If UV isn't a concern then why have all of them gone to a no UV brighteners? Maybe they read about the differents studies too? You can count on it! UV Killer just adds an axtra step that blocks the UV dies that are not washed away making it that much more effective.
I would say to killer primate that maybe you should do some reading and answer your own questions and not take kevin1 or my word for it instead of busting our chops. You act like you are so smart yet act like it's our responsability to prove the facts to you. Kevin1 obviously did some reading, shared what he learned here. You say proove it, I say proove us wrong. We can both back up our claims with written studies done by universities. What are your cradentials? Where's your scientific findings on this subject?