Now, before we go further, let us stress that this is nothing to be concerned about. Rather, finding the aforementioned patches on your underwear is a healthy sign. As we know, pH levels determine the acidity or alkalinity of a given liquid or substance, and according to one helpful post on Twitter:

“Now that everyone is aware, it’s completely normal to discover lighter patches in a woman’s underwear or knickers due to the acidic nature of the vagina, with a pH range of 3.8-4.5. So, I suppose it’s time to abandon the notion of it being a result of poor hygiene. In fact, a healthy vagina is one that can bleach the fabric.“

Dr. Vanessa MacKay, with the Royal College of Obstetricians and Gynaecologists, explains: “The vagina has a self-cleaning mechanism through natural secretions. It contains beneficial bacteria that serve to protect it.”

As per the National Institutes of Health, the usual vaginal pH ranges between 3.8 and 5.0, making it moderately acidic in relation to the naturally neutral pH level of 7.

Dr. MacKay adds that it’s perfectly normal and healthy for women to have clear or white discharge from their vagina, while disturbing the natural balance can lead to infections.

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