Dark eye circles can be caused by various factors like genetics, aging, lack of sleep and nutritional deficiencies. Certain nutrients can help improve the appearance of dark circles. . Vitamin E is an antioxidant that protects and nourishes the delicate skin under the eyes, keeping it healthy and moisturized. Vitamin D3 promotes overall skin health and helps regulate stress and sleep, both of which can contribute to reducing dark circles. Vitamin C boosts collagen production, brightens the skin, and reduces pigmentation, making dark circles less noticeable. Additionally, cutting back on sugar is essential, as it speeds up skin aging and can worsen dark circles over time. Maintaining a balanced diet and staying hydrated also play a vital role in keeping the skin around the eyes healthy.