Around a month ago I had surgery to remove a tumor (benign thankfully) from under my right jaw. The incision goes from in front of my right earlobe down at an angle to almost my adamsapple. The right side of my face is numb and the incision was severely swollen an tender so I could not shave with my double-edge razor. I discussed this with my surgeon and he recommended either and electric razor or a multi-blade like a Mach3. Tried the electric - no thanks - so I am currently using disposable Mach3 razors and shower shaving (the wetness helps). My surgeon said it could take up to 6 months for things to start to normalize.