This Niacinamide + Chaenomeles Sinensis Serum is formulated with Niacinamide and Chaenomeles Sinensis Extract to brighten up dull and unbalanced skin. MARY & MAY Niacinamide + Chaenomeles Sinensis Serum is face serum formulated with Niacinamide and Chaenomeles Sinensis Extract to brighten up dull and unbalanced skin. Contains 2% Niacinamide to lighten skin by inhibiting the transfer of melanosomes and regulate sebum production for balanced skin and enriched with 93% Chaenomeles Sinensis Fruit Extract that is rich in Vitamin C and Flavonoids for smooth and radiant skin appearance.