Double eyelid refers to the skin of the upper eyelid, and there is a shallow groove above the eyelid margin. When you open your eyes, the skin under this groove moves upward, while the skin above this groove hangs loosely at the double eyelid groove and folds down. To form a pair of beautiful double eyelids, we must comprehensively consider the shape and width of double eyelids, the swelling degree of upper eyelids, the width of eyelid cleft, the radian of eyelid margin, the ratio of eye height to eye width, the distance between eyebrows and eyes and other factors. Introduction of double eyelid types: parallel double eyelid heel; The palpebral margin of the upper eyelid is basically parallel. The design of double eyelid lines should not exceed the outer corner of the eye. Suitable for women with big eyes, high eyebrow arch, eyebrows far from eyes and thin eyelids. Open fan type; This is also one of the most classic double eyelids, similar to the "peach eye", which is deeply loved by young girls. It is characterized by narrow inside and wide outside, suitable for moderate distance between eyebrows and eyes, thin eyelids, a certain angle between the horizontal axis of the eyes and the ground plane, and a slight upward lift of the corners of the eyes, which has a feeling of flying spirits and is very arrogant. Double eyelids, which are slightly wider inside and narrower outside, are suitable for people without epicanthus, and the distance between eyebrows and eyes is relatively close, which is more common among western women. Not in pairs; One-third to one-half of them are not matched, only the outer part is matched. This kind of double eyelids is very charming and sexy. The double eyelids of European eyes; Basically, it is only suitable for the skeletal structure of the European face, which is also determined by the physiological and anatomical structure of the eyelid meibomian. Moreover, their eyebrows are particularly high and very close to their eyes, so their double eyelids are often very wide and exaggerated. But this is not suitable for oriental girls.