HELP…My Armpits are changing color!!  Of course we are talking about the fabric, NOT skin.  So here’s the deal, perspiration can cause lots of problem stains, especially on wool and silk stuff.  If you don’t clean sweaty silks, the fibers of the silk can actually deteriorate due to the chemicals in human sweat. 

AND, repeated contact with sweat and body oils can cause PERMANENT yellowing of whites or dye changes in colors!  If you are an overachiever in the sweat department, look into sweat shields for your very special items and PLEASE, clean sweaty things quickly so the damaging salts and oils have less time to do real harm!