Double J—February 3, 2026✓ Verified purchase
Best product I have found to protect from sweating through your hats. You will have to retreat a hat if you wear it a lot in the hottest weather, but it works well and us easy to treat several hats at once for a season or an event. It is flammable so keep that in mind on the jobsite or in the shop, but absolutely easy to use and does what it advertises. Read more
Betty Farrell-Stone—October 23, 2025✓ Verified purchase
First, let me say thatbInwas very skeptical of the claims, having ruined many a favorite hat with the dreaded sweat ring. Much to my surprise, this product not only works, but it works great. I’ve purposely worn the same hat while outside in the heat sweating for the past month and I’m happy to say, not a sweat ring to be seen on it. I have a feeling that going forward my favorite hats will remain such and without the need of replacements. ps- I followed the directions (spray on outside of hat sweat area, let dry and reapply) and I’ve been able to treat all of my hats, as well as my daughter’s and a few of my neighbor’s, so about 30-35 and I still have some product remaining. Just let them sit in a garage or well ventilated area to dry as the odor, while not unpleasant is pretty strong until it dries. Read more
Wayne—February 7, 2026✓ Verified purchase
Works surprisingly very well will buy again I used it on a new hat for the gym and I’ve sweated for weeeks now and no sweat marks Read more
Jordan—July 14, 2025✓ Verified purchase
It works well. Really well. However, I think it should come in an aerosol spray bottle as its a hassle to spray a couple of hats in a row with this type of sprayer. At least a hand sprayer like a windex bottle or something. Also, one bottle was good for 3 hats applying per the directions. Nowhere near 8 hats. Still works very well though which is most important. Read more
Igotfd—December 12, 2025✓ Verified purchase
Blocks sweat & stains VERY WELL. I treated 5 hats w one bottle. Good value, works as advertised!!! Read more
Red McBeard—January 25, 2026✓ Verified purchase
used on a hat i got from a vendor at work. 3 weeks of sweat and not a stain. wish i had this 15 years ago to save some of my favorite hats over time. Spray on liberally to a clean hat, let dry and done. super easy. Could have saved me hundreds on fitted caps, will save me money going foward. Read more
Darlene—February 20, 2026✓ Verified purchase
Works great just make sure it clean when you spray Read more
KWaugh—January 23, 2026✓ Verified purchase
Worked great and kept my white hat white and not sweat lines. Read more