Brightening serum formulated with a vitamin C 5 complex. Used about 3 times. Purchased in January 2025. Expiration date: January 4, 2027. Remaining amount: I think there's about 90% left. - Brand: Torriden - Product name: CELLMAZING Brightening Ampoule - Volume: 30 ml - Features: Clean & Vegan, Recycled bottle - Intended use: Brightening, blemish toning