Living in a house full of males, armpit stains are inevitable. I try to be proactive, and treat the stains when they first appear, so the problem doesn’t get too bad, and the shirt becomes unwearable. Typically, these stains appear on T-Shirts in my home, and it seems to happen more on plain white t-shirts, because they use them as undershirts. I haven’t tried this on other fabrics, but I can attest to the fact that this works well on plain white t-shirts.
- Option 1: Pour vinegar on the affected area, enough so that the stain is fully soaked. I let it sit for about 30-45 minutes, and then throw it in the washing machine. I have an HE machine, and I use the pods as detergent. I add a pod and select the hottest water setting indicated as safe on the label of the shirt. Once the wash is complete, I check to make sure the stain is out before throwing it in the dryer.
- Option 2: Use a one to one ratio of 1/4 cup each baking soda, hydrogen peroxide, and water and mix together PER SHIRT. Rub the solution into the stain, and let it soak in for about 30-45 minutes. I keep an old toothbrush in the laundry room to scrub away any residue, then wash on the hottest water setting indicated as safe on the label of the shirt. Once the wash is complete, I check to make sure the stain is out before throwing it in the dryer.
For darker colored shirts, you can add one cup of white vinegar to a cold water soak in the washing machine. I let it soak 30-45 minutes, then turn the knob to drain the water. Start the wash cycle as normal, using the temperature settings indicated as safe on the label of the garment.