... use,non-toxic 4.OEM and small order is available Gel eye mask, Eye mask, PVC eye mask1.0.18mm pearl PVC2.size:66*7cm3.hot ... from heat. Immerse gel pack in water for 5 minutes.--Cold usage: Lay the gel pack flat in freezer for at least two hours ... , improve mucous membrane scar after surgery--cold compress: physical therapy for traumatic hemorrhage, heatstroke, itch, headache, strain, scald and fatigue-- ...