... , they can take off, do not long time wear, or may cause low-temperature burns. First ... fixed to brace the affected area. Generally about 10 minutes, you can feel the obvious burning sensation. Not ... can also be used, but heat needs a longer time. Note: 1. High fever, bleeding tendency, temperature ... Gently with water or neutral detergent, slightly (5 minutes wash).7. Pregnant women and children should not ...