A protective film forming spray for skin surface includes a spray bottle filled with an undiluted spray solution and a propellant, the undiluted spray solution containing 2 to 40 mass % of water-soluble resin and 2 to 40 mass % of water-insoluble resin so that a total content of the water-soluble resin and the water-insoluble resin is 15 to 50 mass % and a remainder is solvent.