Niacinamide 10% + Zinc 1% by The Ordinary is a serum that contains up to 10% vitamin B3, which supports the renewal of the epidermis, moisturizes, improves skin tone and is also helpful in the treatment of acne, reduces the visibility of pores and overproduction of sebum. The addition of zinc in a concentration of 1% has antioxidant and antibacterial properties.