One part Dawn dishwashing liquid mixed with two parts HYDROGEN PEROXIDE. Add baking soda for scrubbing help. Use laundry brush to work into the stain. Supposed to actually take yellow armpit stains out of white shirts!
#StyleHack: How to Remove Yellow Armpit Stains for Good
How To Remove Yellow Armpit Stains. If you suffer from hyperhidrosis (excessive sweating) in your underarms, you can also try miraDry is a solution that offers a permanent reduction in the amount of underarm sweat.
Armpit hair is natural, but many people consider it embarrassing or unattractive. Removing underarm hair is a personal choice, and if you want to do it, you must choose the hair removal method that feels most comfortable to you
How to rid and prevent underarm stains. Crush 8 – 10 Aspirin pills in a small bowl. Add just enough water to make a paste. Work the paste into the stain. Let it sit on the stain overnight. Wash as you regularly do.