Well I've never actually stained a suit with sweat before but I notice it if I've been walking around in the sun wearing a dress shirt on a hot day. I'm picking up a new suit next week so thought I'd be proactive... Brisbane summers are killer ! Thanks for the tip, I will definitely try this. errrr plugging your pores ain't a good idea. Wasn't there a James Bond girl who died becuase they painted her whole body in gold? Your body needs to breathe. Perspiration is your body's process of cooling off, becuase converts heat energy fro inside the body into salts and water, which evaporates cooling your body.