Dark circles, also called periorbital hyperpigmentation, are considered to be related to poor work and rest habits, age factors, genetic factors, and may also be considered to be related to other factors. 1. Bad work and rest habits: frequent overtime work and late night, lack of sleep for a long time, excessive fatigue, resulting in the eyelids can not get enough rest. Increased local blood flow, vascular congestion and bruising can form dark circles under the eyes. 2. Age factor: As age increases, the fat around the eyes and under the skin becomes weak, and dark circles may become more obvious. 3. Genetic factors: Parents or grandparents who have dark circles earlier are affected by genetic factors, and their children may develop this condition, which is usually related to the thin skin and little subcutaneous tissue around the eyes. 4. Other factors: Excluding the above factors, we can also consider that dark circles may appear around the eyes if you don’t pay attention to skin cleansing, resulting in localized pigmentation; localized tissues are not supplied with enough oxygen, resulting in pigmentation; and you may have dark circles around the eyes if you suffer from emotional fluctuations or illnesses resulting in poor rest. It is recommended to improve the bad habits of work and rest, early to bed and early to rise, can reduce the incidence of dark circles under the eyes. If necessary, you can go to the hospital to get rid of dark circles through laser or surgical treatments.