There must be a lot of people who think that plastic surgery can be done once to achieve the results they want, or that the surgeon can do whatever they want. In fact, for the sake of the safety of the candidates and the best results of the surgery, different plastic surgery also has its different boundaries. For example, double eyelid cut too wide not only no aesthetic sense, but also easy to ptosis; liposuction surgery one-time suction too much fat, easy to cause the candidate shock; these you know? If you don’t know, I’ll give you a popularization today. 1, cut double eyelid not more than 8mm Chinese people’s upper eyelid lid width is generally within 10mm, if you do more than 8mm the width of the double eyelid, it is easy to form the upper eyelid collapse, multiple folds, “meat strips sense”, stubborn swelling, and even blepharoplasty line disappears, upper eyelid ptosis, it looks even more unnatural! “2, rhinoplasty avoid too high and too wide Nowadays, it is very popular to have a comprehensive nasal surgery, such as cartilage transplantation at the tip of the nose to elevate the shape of the nose and implantation of the nasal back prosthesis. Generally speaking, the back of the nose should not be too high or too wide, otherwise there will be obvious skin thinning. If the prosthesis has a clear contour and a clear sense of light transmission, the phenomenon of “red nose” will be obvious in winter. If the tip of the nose is lifted too high, you will get two big black holes like nostrils, the side of the face is especially terrible …… 3. Liposuction Liposuction can not be more than 3,000ml Liposuction is a whole body fluid mobilization of the surgery, a liposuction can not be more than 3,000ml. too fat people can only be operated in small batches, avoid one time to absorb too much, it is easy to cause serious complications such as shock! Of course, there are still a lot of people, in the challenge of this bottom line, but the class born plastic surgeon is strictly abide by this line! 4, hyaluronic acid A full-face injection can not exceed 10ml Hyaluronic acid injection is too little certainly can not play a good filler and shaping effect, but the same part of the injection is too much, a full-face injection of more than 10ml, it is very easy to cause swelling and deformation. Because of the current domestic hyaluronic acid products, are water-absorbing expansion, so do not overdo it, especially easy to cause excessive skin tightness, stiff expression, directly into the “bun face”. Such as rhinoplasty injection is easy to blunt into “Avatar”, jaw injection is easy to form excessive “cone face”, more likely to cause the surface of the skin transparency. How to choose the most appropriate dose to achieve the best results, cosmetic surgeon’s superior aesthetics, rich experience and exquisite technology! 5, botulinum toxin A maximum of not more than 200 units Botulinum toxin is a plastic material, but also a poisonous and highly toxic, if injected too much, there is the possibility of making people fatal hit. Therefore, the amount of botulinum toxin injection should be strictly controlled, botulinum toxin injection facial wrinkles, thin face, 100 units is enough. But injection of thin legs, according to the degree of muscle development, may need 100 units per side.