An applicator having a substantially hollow body for accommodating an ampoule of solution. The hollow body comprises an open proximal end for receiving the ampoule and an open distal end having a flange to accept an applicator pad for applying the solution. A back plug having a lever mechanism is inserted into the open proximal end of the applicator to activate the applicator and seal the applicator after activation. Advancement of the back plug lever mechanism into the hollow body pivots the body of the ampoule to break the neck, activatiug the applicator. The back plug seals the proximal end after activation of the applicator.