How To Remove Perspiration Stains

• Combine 1 quart warm water, 1/2 tsp liquid detergent and 1 tbsp ammonia.  Note that ammonia is meant for fresh perspiration stains (if the stain is old, use vinegar instead of ammonia... perspiration turns alkaline and when it's old, it needs acidity like vinegar to even its pH).
• If the fabric is washable, soak the stain with this for 30 minutes and wash as usual.  If the fabric is not washable, drip this solution onto the spot with an eyedropper. Blot the stain every 5 minutes with a clean paper towel or unbleached scrap muslin, keeping area moist but not wet. Apply more drops of solution after each blotting. When finished, blot with plain water to remove residue.
• For washables, if stain remains try a solution of 1 quart warm water with 1 tbsp vinegar.  Soak the garment in this for 30 minutes, then rinse.
• If stain remains, allow to air dry. Then cover the stain with a clean towel/muslin damp with alcohol.  Let this remain for 30 minutes, changing the pad with a fresh one as it absorbs the stain. Keep the spot and pad moist with alcohol. Wash or dry clean if needed.