The PADORO Tranexamic Acid + Vitamin C + Niacinamide Face Serum Set includes 6 vials of 0.24 fl oz / 7ml each, perfect for brightening and firming the face. The serum is formulated with Niacinamide, Vitamin C, and Tranexamic Acid, known for their skin benefits and is suitable for daily use. The set also includes a serum mixing applicator for easy application. Made with water, glycerin, and other natural ingredients, this product is designed to improve skin appearance and overall health.