Description : I washed my black T-shirt but the white cakes under my shoulders are still there.
Last Answer : White stains - before washing, salt (NaCl) is precipitated from the sweat - you do not have to wash it explicitly, just rinse and it will dissolve in water. If you have white stains on the T-shirt even after ... any way. The only option is to repaint the shirt. Next time, buy better T-shirts ...: o