The length of effective time is often directly related to the overall physical quality of individuals. The principle of "face-lifting needle" is to block the nerve impulses of nerves and muscles, let the over-contracted muscles relax, paralyze the over-developed muscles, and achieve the effect of small face. The effect of botulinum toxin injection is slowly emerging. Generally speaking, the effect will be seen about one month after injection. The maintenance time of face-lifting needle is also a common problem, and the effect of botulinum toxin injection is not permanent. The effect will gradually disappear, and if you want to get the original effect, you must receive another injection.