Dark circles and deep hollows under the eyes are common and can happen due to lack of sleep, stress, tiredness, excessive screen time, allergies, dehydration, ageing, weight loss, family tendency, or nutritional deficiencies such as low iron or vitamins. Rubbing the eyes frequently, smoking, and too much sun exposure can also make the area look darker. Deep hollows often become more noticeable when the skin under the eyes becomes thin or loses fat and collagen with age. To reduce dark circles naturally, try to get 7-8 hours of proper sleep every night, drink enough water, and eat a balanced diet rich in fruits, vegetables, protein, nuts, and iron-containing foods. Reducing stress and limiting screen time can also help improve the appearance of the eyes. Applying a cold compress, chilled cucumber slices, or a gentle under-eye moisturiser may reduce puffiness and refresh the skin temporarily. Using sunscreen and sunglasses outdoors is also important because sunlight can worsen pigmentation under the eyes. Avoid using harsh creams or rubbing the delicate skin around the eyes. If dark circles are severe, long-lasting, or associated with weakness, allergies, or weight loss, it is a good idea to consult a doctor to check for anaemia, thyroid problems, allergies, or vitamin deficiencies. For deep hollows or persistent dark circles, a dermatologist may suggest treatments such as creams, chemical peels, laser treatment, fillers, or other cosmetic procedures, depending on the cause and skin type. In many people, healthy lifestyle changes and proper skin care can gradually improve the appearance of dark circles and make the face look fresher and healthier.