Put the range of MAGIC HEAT PADS wraped in a thin cloth and place it in boiling water for 5 to 7 min.till all crystals dissolve properly.If any crystal is still left out, continue to boil again to avoid re-solidifying of the crystals. When range of MAGIC HEAT PADS is completely clear, it can be use two times. First just after boiling and second when it, s cools.After range of MAGIC HEAT PADS cool down, it can be re-activated for further use by clicking chip in side the liquid. Scalar Magic Pad - Heals Pain, Magic Heating Pad, Heating Pad, Magic Gel Heating Pads, Electric Hot Water Heating Gel Pad, Electric Magic Gel Heating PadPut the range of MAGIC HEAT PADS wraped in a thin cloth and place it in boiling water for 5 to 7 min.till all crystals dissolve properly.If any crystal is still left out, continue to boil again to avoid re-solidifying of the crystals. When range of MAGIC HEAT PADS is completely clear, it can be use two times. First just after boiling and second when it, s cools.After range of MAGIC HEAT PADS cool down, it can be re-activated for further use by clicking chip in side the liquid. Scalar Magic Pad - Heals Pain, Magic Heating Pad, Heating Pad, Magic Gel Heating Pads, Electric Hot Water Heating Gel Pad, Electric Magic Gel Heating Pad