Cheek dimples are small indentations that appear on the cheeks when a person smiles. They are caused by a variation in the underlying facial muscles, specifically the zygomaticus major muscle. This muscle can be shorter or split in some individuals, leading to the characteristic dimpled appearance. Dimples can be present at birth or develop over time. These features are often considered attractive and can enhance a person's smile. While cheek dimples are primarily a genetic trait, they can also be influenced by factors such as age and weight changes. Many people admire cheek dimples, associating them with youthfulness and charm.