Razor with rotatable blade head

A shaving razor, comprising:

• a handle;
• a planar upper flange connected to said handle by a means for connecting, said planer upper flange having a front race, a rear face and a central horizontal open slot, said planar upper flange having an upper face track disposed superjacent said central horizontal open slot on said rear face and a lower face track disposed subjacent said central horizontal open slot on said rear face;
• a blade cartridge including a plurality of razor blades, a razor blade opening, and a horizontal central hub connected to said plurality of razor blades, the blade cartridge further includes an upper blade cartridge track superjacent said razor blade opening;
• a lower blade cartridge track subjacent said razor blade opening, wherein said razor blade opening and said central horizontal open slot accommodate one of the plurality of razor blades in use;
• the blade cartridge further includes an advancement knob located on a first end of said blade cartridge, said advancement knob advances one remaining unused razor blade of said plurality of razor blades to the position occupied by the in-use razor blade of said plurality of razor blades;
• wherein said blade cartridge is arranged with said razor blades at an angular spacing of seventy-two degrees to allow advancing said remaining unused razor blades into a position occupied by said in use razor blade by turning said advancement knob with protruding indicia;
• wherein said blade cartridge is removably retained in place by a sliding engagement of said upper face track with said upper blade cartridge track and a corresponding sliding engagement of said lower face track with said lower blade cartridge track;
• and wherein said plurality of razor blades are rotatable around an axis of the horizontal central hub.