Reasons for having bags under the eyes include heredity, aging, trauma, and bad environment. 1. Heredity: Heredity leads to hypertrophy of the orbicularis oculi muscle, which can lead to the formation of bags under the eyes. 2. Ageing: With age, the skin gradually loses its elasticity and becomes loose, which can also lead to the formation of bags under the eyes. 3. Trauma: When the orbicularis oculi muscle or orbital septum is damaged by the outside world, the fat in the orbital septum may protrude with the weak skin, thus forming bags under the eyes. 4. Adverse environment: not paying attention to sun protection, long-term exertion, long-term sleep deprivation can also accelerate the formation of eye bags. Eye bags usually do not affect the health of the body, it is not recommended to indiscriminately use the method of removing eye bags, so as not to damage the body; if you have high requirements for their own image, you should go to a regular hospital for standardized treatment.