As it turns out, researchers from the University of La Plata found that a vast majority of these products contain glyphosate, the main ingredient in Monsanto's wildly popular Roundup herbicide and the same chemical that's considered a "probable carcinogen" by the World Health Organization.
If that's not enough to get your attention, glyphosate is also associated with IQ loss/intellectual disability, autism, attention-deficit hyperactivity disorder, obesity (both child and adult), diabetes, infertility and cardiovascular disease. Needless to say, this isn't the kind of chemical you want absorbed by wounds, or worse, through the vagina.
"Chemicals absorbed through the vagina are easily and effectively distributed throughout the body, without being metabolized. for example, when estrogenic drugs are administered vaginally, the resulting systemic levels of the drug in the body can be 10-80 times higher than when the very same dose is given orally." [source]