Seoul ceuticals ce ferulic serum. this korean skin care, vitamin c serum contains 20% vitamin c with hyaluronic acid, ferulic acid, vitamin e ( d alpha tocopherol ) and citrus stem cells. this vit c serum is extremely effective for anti aging, anti wrinkle treatment and was modeled after the award winning, skinceuticals ce ferulic serum which retails at $160. seoul ceuticals, k beauty products are designed to work perfectly with any korean skin care routine. this serum comes with a our 100% satisfaction guarantee. if for any reason you're not satisfied, we ask that you contact us through support and we'll do whatever necessary to ensure your satisfaction.