1" greese burn on arm, what to do please?

Ice/local care. Immediately apply ice. Red only-observe and cool packs. Blisters-cover with polysporin (bacitracin and polymyxin) or petrolatum and no stick bandage and keep blisters intact. See doctor soon. If more than that or on face or hands or genitals, go to er immediately. Continue to use ice baths or packs till seen. Keep as clean and sterile as possible. Get tetanus if needed. Alwasy get seen if doubt.