Mary & May Niacinamide and Chaenomeles Sinensis Serum is a brightening and anti-aging serum that combines the power of niacinamide and Chaenomeles Sinensis (Japanese quince) extract. This serum helps to reduce the appearance of pores, improve skin texture, and brighten the complexion. It also works to balance oil production and soothe the skin, making it ideal for all skin types.