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Dimples are visible indentations of the skin, caused by underlying flesh, which form on some people’s cheeks when they smile.
Dimples are genetically inherited and are a dominant trait. Dimples on each cheek are a relatively common occurrence for people with dimples. A rarer form is the single dimple, which occurs on one side of the face only. Dimples themselves are actually caused by having shorter muscles in certain areas of the face.
Dimples are considered attractive in some cultures. Babies commonly have dimples, but sometimes these disappear (or become less noticeable) as the muscles lengthen with age; consequently, dimples are often associated with youth.