A mysterious, but natural phenomenon
Imagine a drop of lemon falling on a black cloth: over time, a lighter stain may appear. It’s not magic, but a simple chemical reaction related to acidity. This is exactly what can happen with some vaginal discharge.
That’s because the vagina has a naturally acidic pH, typically between 3.8 and 4.5. This acidity level plays a vital role: it protects against unwanted bacteria by maintaining a healthy environment. And this acidity can sometimes act as a “natural bleaching agent” when it comes into prolonged contact with the fabric fibers in your underwear.
A sign of good health
Contrary to popular belief, these marks aren’t a sign of poor hygiene. Quite the opposite! They’re often a sign that your body is functioning exactly as it should.
Dr. Vanessa MacKay of the Royal College of Obstetricians and Gynaecologists explains that the vagina has a very sophisticated self-cleaning system. Using natural secretions and the presence of good bacteria (such as lactobacilli), it regulates its internal balance without external help.
This is why clear or slightly white vaginal discharge is perfectly normal. It can vary in texture or quantity depending on the menstrual cycle, but it remains a sign of good health.
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