Even if you may regularly get a full night’s sleep, have a well-balanced diet, and have the best skincare routine, you may still have hollow under eyes and dark circles. These tend to make you look tired and older than your actual age. As we age, the skin’s collagen and elastin break down faster than the body can rebuild, causing skin to lose elasticity. The skin also loses volume due to the loss of bone and fat. When skin loses volume, it tends to sag, often leading to wrinkles and pockets of loose, sagging skin. Other factors contributing to deep, hollow under eyes include genetics. Patients with darker skin types, particularly patients of Southeast Asian, Middle Eastern, or Mediterranean descent, may be predisposed to dark circles under the eyes.