Self-activating serum with 10% Vitamin C, supports skin brightness. - Brand: ZO Skin Health - Product Name: C-Serum ZO - Volume: 50ml - Made in: USA - How to use: Use in the morning and evening skincare routine - Expiration date: November 2026 I purchased this at a beauty clinic last year, but I no longer use it, so I am selling it. Thank you for looking.