A method for controlling menstrual flow including sphincterally contracting and expanding labia minora having left and right labium minuses, such anatomical structures moving to a closed position upon each sphincteral contraction or to an opened position upon each sphincteral expansion adhering and disjoining the labia minora, each adhesion securing the labia minora at the closed position, the disjunctions freeing the labia minora for opening movement and resisting and permitting menstrual flow, the resistance occurring on sphincteral contraction and adhesion, and the permission occurring upon sphincteral expansion, each adhering step disposing a hydrophobic and bio-compatible adhesive selected from acrylic adhesives, polyisobutylene adhesives, and silicone adhesives, and each disposition step utilizing an applicator selected from brushes, swabs, rub-on sticks, roll-on applicators, pump sprayers, aerosol sprayers, squeeze tube applicators, bottle applicators, and finger applicators.