... seconds when be used continuously.2.Purpose: Cold compress: physical therapy for traumatic hemorrhage, heatstroke, itch, headache, strain, scald, fatigue. Hot ... surgery.3.Precaution: The ice bag can only be used for external medication. If eye or skin should contact the ... under -18 conditions, and can be repeatedly used alternately for hot and for cold. Non toxic. Non-caustic. Reusable Gel Bottle ...