Numbuzin No.6 Deep Sleep Mask Serum is a powerful overnight serum that revitalizes dull and tired skin while you rest. Packed with Hyaluronic Acid, Niacinamide, and Peptides, it delivers deep hydration, strengthens the skin barrier, and restores a healthy glow. Its silky, non-greasy texture absorbs quickly, leaving skin soft, plump, and refreshed by morning.