Are Sweat Stains Yellow?

The real cause of these yellowish stains is a mixture of the minerals (especially salt) in sweat mixing with the ingredients in antiperspirant or deodorant (primarily aluminum). This is the combo that makes the yellow stains on white clothes and discolors the armpit areas of colored clothes.

How do you get rid of yellow sweat stains?

Vinegar or Lemon Spot Treatments

Place up to three tablespoons of vinegar or fresh lemon juice in about a cup of regular tap water. Rub the mixture into the stained area using circular motions. Allow the solution to penetrate the stain for up to an hour. Wash your shirt using your washing machine's cold setting.

Do yellow sweat stains come out in the wash?

Yellow stains occur when chemicals in your antiperspirant mix with proteins in your sweat. You may not see stains right away, but over time they “bake” into your shirts in multiple trips through the washing machine and hot dryer.