This is the Manyo Factory Galactomyces Niacin Essence Mask Pack. Manyo Factory was having a sale event recently, so I stocked up on 10 packs, and I definitely feel my skin texture improving after using it! My skin tone also feels brighter, and I didn't feel any stinging or anything like that. I've bought and tried the essence before, in addition to the mask pack, and this is good too. I recommend it!