The Effect Niacinamide — face mask with niacinamide, 30 ml. Instantly refreshes and evens skin tone, helps to reduce the appearance of pores and reduce traces of post-acne. Niacinamide (vitamin B3) regulates sebum production, reduces irritation and strengthens the skin barrier, making the skin smoother, cleaner and healthier. It is suitable for both oily and problematic skin, as well as for dull and dehydrated skin in need of restoration.