Chin dimples, also known as cleft chins, are small indentations that appear in the center of the chin. They are caused by a genetic variation in the structure of the jawbone and surrounding tissue. This feature can be more pronounced in some individuals, giving their chin a distinctive appearance. Chin dimples are often considered a unique and attractive trait in facial features. They can be present at birth or develop over time. While they are primarily a cosmetic characteristic, they do not have any impact on a person's health or function.