Sprinkle a little on the shirt’s underarms and collar, then iron to prevent sweat stains on white shirts. The powder forms a barrier that keeps oil and grime from seeping into the threads.
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Directions for cleaning your iron surface with salt. Okay, put a towel or paper towel on ironing board, sprinkle about a tablespoon of salt on it. Turn iron on to its highest heat-steam off-. Gently iron over it. and Finished! So hope this helps!