Dark circles are areas of discoloration or shadowing beneath the eyes, typically caused by genetics, thinning skin, or excess pigmentation. Under-eye bags refer to mild swelling or puffiness in the lower eyelids, often related to fluid buildup, aging, or fat displacement. These concerns are common in both men and women and can vary in severity based on lifestyle, heredity, and age. They may give the face a tired, worn-down appearance, even when a person feels well-rested. Though harmless, they are often perceived as a cosmetic concern that affects overall facial freshness.