Dark circles under the eyes can be caused by a variety of factors, including:
1. Genetics: Family history can play a significant role in the development of dark circles, as certain people may inherit thinner skin or more prominent blood vessels around the eye area.
2. Age: As we age, the skin’s collagen and fat diminish, making blood vessels beneath the eyes more visible, leading to the appearance of dark circles.
3. Thin Skin: The skin under the eyes is delicate and thin, which can make blood vessels more apparent, especially when blood pools in the area.
4. Lack of Sleep: Insufficient sleep can lead to increased paleness of the skin, making dark circles more noticeable.
5. Allergies: Seasonal allergies can cause inflammation and increased blood flow, resulting in darker skin around the eyes.
6. Sun Exposure: Prolonged sun exposure can trigger the production of melanin, which can contribute to darkening the under-eye area.
Not everyone experiences dark circles under the eyes. However, they are relatively common and can affect individuals of all ages and skin types.