What biological welding, seamless technology and trichiasis are all exaggerated gimmicks. In fact, there are three kinds of double eyelids, 1. Embedding thread 2. Three o'clock positioning 3. Completely cut. Completely cut double eyelids are bound to leave scars.
It is suggested that regular and legal beauty and medical institutions, beauty salons and profiteering industries have frequent accidents in recent years, so we should not just watch advertisements.