What Those “Bleach” Marks on Underwear Really Mean

Many people notice lighter or “bleached” spots on underwear and feel confused or worried. In most cases, there is a simple and normal explanation.

The marks are usually caused by the body’s natural pH levels. Vaginal discharge is slightly acidic, and over time it can lighten the color of fabric. This is a natural process and not a sign of poor hygiene or a problem.

In fact, it often shows that the body is maintaining a healthy balance. The acidity helps protect against harmful bacteria and infections.

Of course, it is still important to pay attention to any unusual changes. Strong odor, itching, or discomfort should always be checked by a doctor. But color changes on fabric alone are very common and usually harmless.

The key is understanding your body and not jumping to worry. What may look unusual at first is often just a normal part of how the body works.