Pink Solution is the perfect match to attack those unwanted under arm stains. To achieve best results use our Universal Bar (Formerly Laundry Bar). Using hot water, get the garment and bar wet, apply directly to the stained region and scratch both the inside, as well as, outside of the fabric in order to aggravate the stain. One treated, leave the fabric to sit and rest for 30 minutes to three hours (depending on the degree of stain), come back to it and rinse it clean to view some good-as-new results!