There is no definite characteristic of slowly growing double eyelids. The single and double eyelids are genetically determined, and the change from “single eyelids” or “inner double” to “double eyelids” observed in life is mostly due to people who originally had double eyelids by various 1, some people are born with double eyelids, but due to edema, eye fat and other factors affect the eyelid folds, making their eyelids look flat, for single eyelids, such people in the whole body fat reduction, eliminate eye edema, usually can slowly appear Double eyelids; 2, part of the people originally single eyelids, with the passage of time and aging, eye skin relaxation, folds, and eventually in the appearance of double eyelid qualities, but their corresponding genes are still the genes that cause single eyelids; 3, part of the people long-term use of eye patch, double eyelid patch, so that the eyelids form muscle memory, resulting in the formation of acquired double eyelids, in essence, also by pulling the eyelids to achieve double eyelids. However, this phenomenon has not been verified by clinical studies and is full of chance. Moreover, long-term use of makeup tools such as eye patches may cause local skin or eye irritation, therefore, caution is recommended. The only fast and effective way to get double eyelids is with blepharoplasty, where a professional medical aesthetician evaluates and creates double eyelids, a procedure that is now more mature and has a relatively high level of safety.