I read this on a site :
Forget the pink anti-itch stuff. Grab some colloidal oatmeal (oat powder) to soothe your poison ivy, dry skin, eczema, sunburn, or itchy rash. You don't have to sit in a bowl of oatmeal; just add oat powder—sold commercially as Aveeno—to your bath water. Colloidal oatmeal coats the skin and seals in moisture.
Anyone think it would help with sweating?