Nano Singapore Glutathione Brightening Serum is a lightweight daily serum formulated to improve skin clarity, even tone, and restore natural radiance for a brighter-looking complexion. Powered by Glutathione for antioxidant-backed brightness, Tranexamic Acid to support the look of discoloration and uneven patches, and Niacinamide (Vitamin B3) to refine texture and strengthen the skin barrier, it helps promote smoother, more luminous skin with consistent use. Suitable for all skin types, including sensitive skin.