What do I do about kitchen grease burn on arm?

Cold, aloe. For first degree burn, no blisters and al knifed burn immediate cold and aloe is ok. For aswcond degree pr more extensive burn topical prescription cream such as silvadene (silver sulfadiazine) or biafine can prevent infection amd allow healing. If the burn is involving the hand or an extensive area it is best ot be seen by md.