IT’S NORMAL! Your vagina is acidic and has a pH of 3.8-4.5. That’s acidic enough to bleach fabric, and that’s what’s happening. The light patches in underwear isn’t staining from period blood or discharge, it’s bleaching – the same as if you’ve ever tried putting lemon juice in your hair to lighten it. It’s not … Continue reading Why you will find light patches in female underwear