If you find a “bleach” spot on your underwear, it may have nothing to do with your washing machine.

These spots are actually caused by the vagina’s natural pH levels, which can be acidic enough to bleach fabric. This is a common occurrence for many women and is perfectly normal. Thanks to the internet, old myths are busted and knowledge is easily shared.

Life hacks and helpful tips, once known only by a few, are now widespread. What once would have been a mystery can now be solved with just a few clicks.