If you have dry or sun-sensitive skin, it can darken more easily because the skin barrier is weaker and reacts quickly to sunlight, dryness, rubbing, or irritation. Dark circles that last for years may be caused by lack of sleep, stress, genetics, allergies, dehydration, too much screen time, poor nutrition, or frequent sun exposure. For some people, dry skin alone can make the under-eye area look dull and tired. Taking care of sensitive skin gently is important. Using a mild moisturiser, applying sunscreen every day, wearing sunglasses outside, and avoiding harsh soaps or scrubs can help protect your skin and prevent further darkening. Getting enough sleep, drinking plenty of water, eating a balanced diet, and managing stress can also help your skin look better over time. Using too many creams at once or strong fairness products can irritate sensitive skin and make pigmentation worse. A dermatologist can recommend the right creams or treatments based on whether your dark circles are due to pigmentation, thin skin, allergies, or visible blood vessels. Consult a doctor if the darkness gets worse quickly, your skin becomes itchy or painful, or if you do not see improvement after following good skin care and healthy habits.