Why are menstruation products marketed gender-specificly, i.e. “feminine wash”?

By labeling products as "feminine wash", this is a polite way of describing washes specifically designed to cleanse the female genital areas. These washes are meant to restore the natural vaginal pH to a mildly acidic environment. The better quality washes have probiotics (friendly bacteria) incorporated into them. These probiotics help to maintain the natural mildly acidic environment and therefore prevent lower genital tract infections from occurring because bacterial and fungal organisms do not propagate in an acidic environment. They should be used daily to be effective and to preserve good feminine hygiene.