Precautions for using liquid nitrogen cryotherapy machine

1. Protect the wound surface. Don't break the blister or peel the scab by yourself, otherwise it is easy to cause bacterial infection. If the blister is large and discomfort, you should go to the hospital to extract the blister fluid under aseptic operation to preserve the blister surface and wait for it to fall off naturally.

2. After cryotherapy, local depigmentation is a more common situation, and it can gradually return to normal within a few months.