Kiehl's Ultra Pure 5% Niacinamide High-Potency Serum is an advanced 30ml facial treatment, formulated to improve skin brightness and evenness. Thanks to the high concentration of 5% niacinamide, this high-potency formula helps reduce the visibility of imperfections, dark spots and enlarged pores, giving a smoother and more radiant appearance. The light texture absorbs quickly, making it ideal for all skin types, even sensitive skin. Enriched with pure, high-quality ingredients, the serum supports the skin barrier and helps maintain hydration. Perfect for those who want more uniform, luminous and fresh skin, this product represents a precious ally in the daily beauty routine.