Slimming face injection, that is, A-type botulinum toxin injection, mainly acts on muscle tissue, commonly used to correct biting muscle hypertrophy. Slimming face injection to thin the face effect is good, and the operation is simple, affordable, do not need to go to the biting muscle, jaw angle, can achieve the effect of cosmetic, is the public more easily accepted a cosmetic micro-contouring method. In general, the injection of Botox surgery needs to be injected on both sides, but the actual surgery needs to be based on personal circumstances, to develop a specific injection program. Many people have the habit of unilateral chewing, so that unilateral biting muscle is overdeveloped, resulting in the face of the left and right proportions are out of proportion, so it is necessary to overdeveloped side of the biting muscle to appropriately increase the measurement of the injection, or injection of this side of the biting muscle alone, in order to achieve the symmetry of the facial proportions of the face of the thinning effect. 1, 24 hours can not take a hot bath, sauna, can not go to the place of serious pollution; 2, 1 week, can not eat too hard, stimulating things; 3, the quality of the face thinning injection on the market is mixed, the applicant needs to go to the regular hospital for treatment, to avoid adverse reactions, affecting the facial aesthetics. It should be noted that the injection of botulinum toxin measurement needs to be calculated accurately, and the professional and technical level of the surgeon has certain requirements. Therefore, candidates must go to a regular hospital for treatment.