Hot & Cold Ice Gel Pack for Head, Suitable for Head forehead also use in Multipurpose Use.For Cryotherapy (Cold use) Keep the pack without the cloth in the freezer for 30 minutes. Check the temperature before using. Insert the pack in the designated cloth pouch and use in the affected area. For Hot Fomentation (Hot Use) Boil the water in the vessel (Size suitable to the gel pack to immerse completely). Immerse the gel pouch in the hot water for 10-15 minutes. Remove carefully, wipe it dry and insert it in the pouch/belt. Or use as guided. Keep in Microwave for only 20 sec. I n case one needs additional heating to keep the pc again for 20 sec and then flip and repeat In no cases, it can be kept for more than 20 sec at a time. Also, avoid overheating or the gel pack may get damaged. Remove carefully, wipe it dry and insert it in the pouch/belt. Or use as guided.