How to use the anesthetic, this time talk about the use time of the ointment. As the application time is prolonged, the anesthetic effect will increase, and the onset time of the intact skin will generally be 1 hour (different people vary greatly). Generally, it takes more than one hour to achieve satisfactory results. Personal pain thresholds also vary from person to person. Others need a longer period of anesthesia to achieve complete painlessness. In general, to ensure adequate drug use, prolong the coating time, the deeper the drug penetration, the better the anesthetic effect and the longer the action time. However, after a long application time, the effect begins to decrease. The skin penetration effect is different in different parts of the body, and the onset time is different. Generally speaking, the shoulder and the back work faster, the forearm of the arm is slower, and the thigh is the slowest.
