Niacinamide Gel Moisturiser FLATIRON ECO COSMETICS BYMANYC ® New York.Discover the Niacinamide Gel Moisturiser FLATIRON, a lightweight and hydrating face gel, essential for revitalizing and evening out your skin tone. Enriched with powerful Vitamin B3, this gel from the BYMANYC New York. collection is the next level in vegan and ecological cosmetics to combat dark spots. The Brightening Power of Niacinamide Formulated with 5% Niacinamide, this multitasking gel helps your skin retain moisture, improves its overall