1, crescent shape: double eyelid line is included, the outer edge is closer to the eyelid edge, the center is widest, and the double eyelid line is curved. Among them, the arc is slightly larger or smaller, and there are also points with incomplete arcs in the inner and outer corners of the eyes. Double eyelid fold is a crescent shape with two ends close to the inner and outer canthus and the middle far from the eyelid margin.

2. Parallel type: the fold of the upper eyelid is parallel to the eyelid, and the width of the inner, middle and outer double eyelids is roughly the same. In this case, the double eyelids look foreign, dignified and steady. In addition, some people are not obvious at ordinary times, and they can only see it when they blink or close their eyes. This is called inner double.

3. Fan-open type: The skin wrinkles of the upper eyelid begin at or near the inner canthus, and gradually leave the eyelid margin outward and upward, and change from narrow to wide like a folding fan, also known as wide tail type. This kind of double eyelids looks beautiful and charming. The so-called "phoenix eye" is this kind of eye shape.