It also curbs nausea for many...However; It makes ME nauseous though.

I use a good, old, faded, worn, 100% cotton bandana (Maga RED works best! HA!!!!) Bursting into song, dancing it out a few steps.......COLORS!

REFOCUSING!

I wet it and fold it and tie it very loosely around my neck when doing work outside in hot weather. I did that when I was working as a carpenter's helper in the HOT TEXAS sun!

Just keep wetting it as needed.