Why are there yellow spots where your nipples on bra that come off in the wash?

The yellow spots on your bra that come off in the wash are most likely caused by a build-up of body oils, sweat, and deodorant. These substances can react with the chemicals in your detergent and water to create a yellow stain.

Here are some tips for preventing yellow stains on your bras:

* Rinse your bras thoroughly after wearing them.

* Wash your bras in hot water with a mild detergent.

* Avoid using fabric softeners or bleaches.

* Dry your bras in the sun or on a clothesline.

If you do get a yellow stain on your bra, you can try to remove it by:

* Soaking the bra in a solution of one part hydrogen peroxide and two parts water for 30 minutes.

* Rinse the bra thoroughly and wash it as usual.

* Repeat if necessary.

If the yellow stain persists, you may need to take your bra to a professional dry cleaner.