Only 20% of the population has it. While the other 80% only wish they were blessed with such cuteness. Dimples are actually a defect in the facial muscle named Zygomaticus major. How rare is a STUMP tumor? uterine stump tumor.

Is it normal to only have one dimple?

In what researchers called “a rare phenomenon,” it’s possible that a person can possess a unilateral dimple: just one lone dimple on either the left or right side of his or her face. Even rarer than this sort of dimple, though, is the “fovea inferior angle oris” — aka one dimple on each side of the mouth corners.

How common is a single dimple?

In a 2018 study of 216 people aged 18–42 with both unilateral (one dimple) and bilateral, 120 (55.6%) had dimples in both of their cheeks.