For starters, the most common reason for darkness under the eyes is that the skin may be extra thin (from long-term overuse of prescription retinoid products, genetics, and/or loss of collagen due to the aging process).
This leads to blood vessels becoming visible under the skin. Some people may also have a deep inset bone structure that can cause a shadow under the eye, making the area appear dark. Others can get what is referred to as “leaky vessels” with age. This is when blood leaks from capillaries, creating under-eye darkness.
Additionally, failing to get enough sleep can cause dark circles, because when you don’t get enough rest, your body’s circulatory system is compromised, so blood can stagnate in the vessels under the eyes.
No matter the cause, if you have dark circles, there are things you can do. Keep reading to learn all three.