If you’ve ever thrown out a shirt because of yellow sweat stains in the underarm area, there’s a simple solution that can make your clothes look like new again!
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Say goodbye to yellow underarm stains
According to the folks at Degree, the stains occur when the aluminum in your antiperspirant or deodorant combines with the salt in your sweat. The stains are notoriously difficult to get rid of with normal washing in the laundry machine.
Using three shirts, we tested out a quick, easy and cheap trick to remove the yellow armpit stains, and look at the results!

Here’s what you need:
- 3% hydrogen peroxide
- Dish soap
- Baking soda
- Toothbrush

After applying the ingredients directly to the shirt, use an old toothbrush to work them in for a minute, and then let the shirt sit for at least an hour before putting it in the washing machine.
We didn’t use any precise measurements, but we do recommend doing a pre-test on a small area.

This solution worked like magic on both white and colored shirts, but you can also try OxiClean if you have it around.
To prevent the stains in the first place, Degree says it helps to wear loose clothing, make sure your antiperspirant deodorant is dry before you get dressed and don’t use too much product.
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