Biopelle’s KNR Serum features an advanced bio-complex of proven radiance-boosting ingredients and technologies to visibly improve the appearance of hyperpigmented skin. This complex helps deliver a clearer, brighter and more even skin tone. It increases cell renewal as it exfoliates and diminishes melanin production to restore a luminous glow to your skin. Time-released doses of this unique formula revitalize and firm your complexion without causing irritation. This light, rapidly absorbed serum is the ideal evening serum.