Bonnyhill the real niacinamide ampoules mask sheet

This sheet mask harnesses niacinamide (vitamin B3) as its key active to even skin‑tone, reduce the appearance of enlarged pores, and control excess oil. The texture is a single‑use ampoule‑soaked sheet, designed to adhere for ~10‑20 minutes and leave a softly hydrated finish. From available ingredient lists of Bonnyhill’s Niacinamide/brightening mask variants, it also contains humectants like glycerin and sodium hyaluronate. Based on user mentions, it works best for normal to oily/combination skin seeking tone‑correction and pore‑refinement; if you have very dry or sensitive skin, test for any fragrance or additional actives.