The internet is arguably one of the greatest inventions of the last century, offering an endless pool of shared knowledge that enriches our everyday lives. With just a few clicks or keystrokes, you can learn about virtually any topic—unlocking answers that once puzzled even scientists.

Thanks to the internet, many misconceptions have been debunked, and previously guarded tips have become common knowledge. For example, many women have wondered why their underwear sometimes shows bleach-like spots. This question has sparked widespread discussion online, leading to surprising answers.

Contrary to popular belief, these bleach spots aren’t caused by your washing machine. Instead, they result from the natural pH levels of the vagina.

The vagina’s acidity, typically ranging between pH 3.8 and 4.5, is completely normal and healthy. These acidic secretions can sometimes bleach fabric, causing lighter patches on underwear. Far from being a sign of poor hygiene, these spots actually indicate a healthy vaginal environment.

Dr. Vanessa MacKay from the Royal College of Obstetricians and Gynaecologists explains that natural vaginal secretions serve as a self-cleaning mechanism. They help maintain a balance of good microorganisms that protect against infection.

The National Institutes of Health confirms the vaginal pH usually falls between 3.8 and 5.0—acidic enough to keep the area safe. Clear or white vaginal discharge is normal, but infections can occur if this delicate balance is disrupted.

So next time you notice those bleach spots, remember: it’s not your laundry but your body’s natural, healthy acidity at work. The internet makes it easier than ever to find these reassuring truths and bust old myths.