Attention Ladies! This is what Innerwear Stains means { PHOTOS}
A number of times ladies may worry about black stains on their underwear but today here is the whole truth because this is a sign that your body is healthy.
Christine Juma 
Most of the ladies think that having this stain that they are not hygienic, but that is untrue.
This is what it means when you have this stain on your black underwear. The female reproductive system ( vagina) is always acidic. It has a Ph of about 3.8 to 4.5.
It produces acidic fluids which have the capability of bleaching the black underwear. The acid produced is used to kill any pathogens area the vagina.
