Dull and tired-looking skin can develop because of stress, poor sleep, dehydration, sun exposure, unhealthy food habits, pigmentation, or lack of proper skin care. Skin glow usually improves gradually when the skin is protected properly and overall health is maintained. Dark spots and uneven skin tone may also become more noticeable because of sunlight, pollution, or previous acne and irritation. Gluta C Glutathione is commonly used by some people for skin brightening and antioxidant support. It may help improve skin appearance and pigmentation gradually in certain individuals, but results can vary from person to person and are usually not immediate. Supplements alone may not give the best results without healthy lifestyle habits and proper skin care. Using sunscreen regularly, drinking enough water, sleeping properly, eating fruits and vegetables, and reducing stress may help improve skin glow naturally. Avoid harsh fairness creams, steroid creams, and strong home remedies because they can damage the skin and worsen pigmentation over time. Talk to a dermatologist if your skin becomes rapidly darker, develops irritation, itching, acne, or if the pigmentation continues despite regular skin care and healthy habits.