Detailed Product Description usage:1) cold compress : physical therapy for traumatic hemorr-hage , heatstroke , itch , headache , strain , scald , fatigue . 2) hot compress : alleviate rheumatic pain , neural pain , sciatica , vertebral pain , improve mucous membrane scar after surgery .operation methods:1) cold compress : put the mask into fridge for at least half an hour before use2) hot ...