Wash the area that needs anesthesia with soap and hot water.
Cover the skin with a towel (40°C ~ 50°C) and hold for 5 minutes to increase the skin temperature and open the pores, which will help the anesthetic penetrate the skin quickly.
Spread a small amount of cream onto the skin and rub it in gently with your hands so that the cream and skin stick together completely. Then apply a second layer of cream to the skin (keep 1/8 inch or 2 coins thick).
Cover cream with plastic wrap to keep cream temperature compatible with skin temperature.
When time reaches 50-70 minutes, remove the plastic wrap and wipe off the cream, then start working （Usually numbs the skin for 3-5 hours. )