Detailed answer

Dark circles and under-eye bags can have multiple causes. One common factor is genetics, as some people are more prone to having darker skin pigmentation in the under-eye area. Lack of sleep can also contribute to dark circles and under-eye bags, as tiredness can cause blood vessels to dilate and become more visible. Age is another factor, as the skin becomes thinner and loses elasticity over time, making blood vessels more prominent. Allergies, such as hay fever, can lead to under-eye puffiness due to inflammation and fluid retention. Certain lifestyle choices, such as excessive sun exposure, smoking, and an unhealthy diet, can also contribute to the appearance of dark circles and under-eye bags. Maintaining a healthy lifestyle, using sunscreen, getting enough sleep, and managing allergies can help reduce their appearance.