Atsko Sno-Seal UV Block Sun Protection (for Boat Covers / Outdoor Fabrics), 32-Fluid Ounce

This stuff gums up, and makes solid globs at the bottom of the bottle, which will get stuck in the straw of the spray nozzle. Just shake it REALLY well for a long time, then use a paint brush. I used it on 2 cotton button-up shirts, in order to make them Sunblock-y. It works in that regard, but the shirt is very much LESS Breathable than it was before. Like it's not as comfortable to wear the shirt anymore, which is a pity. But better than getting Agespots and Skin cancer.

Read some reviews that it is difficult to apply with the sprayer, though I did not have any issue. I sprayed this on a grill cover. Those covers usually last about a year in the Florida sun. I put 2 decent coats of this stuff on. Let's see what happens in a year. Maybe I will update. PS: I had left over product even after 2 applications. I removed and flushed the sprayer nozzle so that it would be usable in the future and not clogged solid. EDIT: It has been a couple of months that the coated grill cover has been sitting in the Florida sun It is noticeably faded on the side that is exposed to the sun. Fair to conclude that this product did not work as intended or hoped for so I have reduced the rating to 2 stars

It was as expected I don't know if it working yet nut it makes me feel better now that it is on my cushions