Numbuzin No.5 Vitamin Concentrated Serum is packed with star ingredients for brightening skin complexion and improving inner/outer skin melanin. Formulated with niacinamide, alpha-arbutin and bisabolol, the serum takes care of hyperpigmentation and spots, restores natural glow and boosts skin radiance. Plant extracts are added to minimize skin irritation which makes it suitable for sensitive skin types.