I keep a cool wet washcloth in a gallon sz. ziplock bag. I only use the thick, plush washcloths as they retain fluid better, and are softer to the touch on my sensitive skin. I have ,at times, placed a freezer pack in the bag as well, to keep the cool temp inside the cloth.
CRPS I has caused a profuse sweating problem. I can not wear makeup anymore, as it will sweat off immediately. My sympathetic nervous system has a mind of its own, and there is no controlling the drips of sweat that pour from my head..very frustrating. With a swipe of the cloth, I get immediate relief. When and if I feel too hot, I place the cloth on the back of my neck..it automatically cools my core down. My family and friends have also got use to me wearing a wet cloth draped over my head, like a wide headband..hey, it works!
Try it, you'll like it!