Many detergents add brighteners to their product. I use to have one that didn't and was scent free. It was much less expensive than the "sporting goods" brand.
Well they got modern, added UV brighteners and I had to find a substitute.

Went with baking soda and borax. Made the clothes smell neutral and it cut the UV from the clothes, while testing it under a black light. And talk about economical. It far beat my cheapness standard.

I got so good at it, I use the new formula with my around the house and hiking clothes. But it would never sell commercially. Almost all Americans use far too much water and detergent. The secret is to put in the water first, minimum amounts and never large. Then you add the baking soda, borax and a couple of drops of scentless soap. (All available commercially). Then you add the clothes to the washing machine; just enough for the water.

Never thought of arrow vanes. I have four for practice ready.
Will test them out this week. Thanks. I need a little break from the home repairs.

And almost time to get the hunting clothes ready and bagged up.