Why Do Those Stains Exist?
Health experts say there’s no need to be concerned about those lighter areas or “bleach stains” on underpants. They actually indicate the health of the vagina! The pH of the vagi** naturally stays in the range of 3.8 to 4.5, which is slightly acidic. Although this acidity aids in defense against dangerous microorganisms and diseases, it can eventually discolor textiles.
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Because the vagi is acidic, it is quite usual to find lighter areas in a woman’s underpants or underwear, according to Dr. Vanessa MacKay, a spokesman for the Royal College of Obstetricians and Gynecologists. I guess it’s time to give up on the idea that it’s due to inadequate cleanliness. The ability to bleach the fabric is actually a sign of a healthy vagi**.