Anonymous wrote:How would a shampoo that is presumably used topically for a few minutes cause endocrine disruption?
Parabens are classified as endocrine disruptors, but most drug store brands advertise themselves as paraben-free these days, so not exactly sure what OP’s referring to. Perhaps there are other ingredients that are problematic.
Regardless, products you apply to your skin (and your scalp is skin) can and will be absorbed into your body in varying amounts. Won’t necessarily cause issues for everyone or for anyone, but you must at least realize that this stuff gets into your body.