22mL / 0.77fl.oz \n \nDay / Night \n \nNiacinamide Serum #1 evens skin tone, fades pigmentation and most importantly protects and builds the skin's immune system, resetting the skins protective pH which is essential to correct the acid mantle. Reduces inflammation, sweat pimples and pore blockage. \n \nNiacinamide is an essential serum for women, men and adolescents: Niacinamide regulator serum maintains and promotes clear and smooth healthy skin. It can be used day and night with noticeable improved skin results.