Disposable plastic razor

A one-piece plastic razor cartridge comprising a blade support including a face-engaging guard bar, a plurality of spaced posts projecting from said support, a perforated blade having a cutting edge disposed upon said support so that said posts project through mating perforations and said cutting edge projects toward said guard bar, each post terminating in a predetermined configuration so as to develop collectively a contoured face-engaging surface which in combination with said guard bar and blade develop optimum blade edge geometry and means for securing the blade to the blade support.