How long the double eyelids can last depends on the doctor's technical level and the thickness of your personal eye skin. Some people in double eyelid surgery can maintain catgut embedding for more than ten years, while others can only maintain catgut embedding for one or two years because of loose gut or loose skin. If there is something wrong with the doctor's skill or technique, it is more likely to affect the effect. Now RUBY Plastic Surgery Hospital in Korea has developed a new method of embedding thread. Compared with the general 3-4-point binding method, the hospital adopted the multi-point binding method, which has the advantages of natural tracelessness and permanent effect. But because not everyone's eye conditions are suitable for double eyelid catgut embedding, such as older eyes, loose skin, swollen eyelids and more subcutaneous fat, it is not suitable for catgut embedding.