TL;DR Summary
Dark circles under the eyes are caused by a combination of factors including genetics, thinning skin, volume loss, pigmentation, and visible blood vessels beneath the surface. They can make the under-eye area appear tired or hollow and are often resistant to topical skincare alone. Effective treatment depends on identifying the underlying cause, whether it is pigment, shadowing, or structural volume loss. Results vary based on anatomy, skin quality, and the expertise of the provider performing the treatment.