Sorry if this is a repost, but I'm not reading 17 pages! More of general tips, wash your helmet while in the shower with shampoo. Shampoo washes clean, and does not leave a soapy residue or film. Also, for cool weather rides in which I don't want to carry a vest, use a Tyvek envelope. A large size will easily cover your chest, and is completely windproof. Folds up to almost nothing, weighs almost nothing. And since it's Tyvek material, it does not absorb sweat and get damp.