1. Wear a mask with proper tightness: In general, wear a disposable medical surgical mask for low-risk exposure. If conditions permit, you can choose a non-ear-hanging mask to reduce the friction and pressure on the skin behind the ear;
2. Wearing time should not be too long: If sanitary conditions permit, take off the mask for 2-3 hours or change the position of the mask appropriately to partially decompress;
3. If the indentation is serious, you can choose some external ointment that can improve the blood circulation of the skin and wipe it off;
4. If the skin becomes soft, wrinkled, etc. You can apply emollients locally before wearing the mask to reduce the skin irritation caused by the edge friction of the mask.