New & Unused. Activated Serum (after mixing) is 4.5 mL C-Firma Fresh is a super-potent vitamin C day serum with antioxidants & fruit enzymes that firm & brighten skin's appearance & reduce signs of photoaging. BENEFITS Powerful antioxidant complex of 15% l-ascorbic acid, 0.5% ferulic acid, & 1% vitamin E Visibly diminishes signs of aging & photodamage - replaced by radiance, luminosity, & firmer complexion. Enzymatically dissolves surface dead skin cells as it hydrates & soothes. Formulated at a skin-friendly 2.5 pH. HOW TO USE Designed to be mixed once by you before 1st use, to maximize ingredient potency & keep formula fresh. Pour liquid serum base into the l-ascorbic acid powder vial. Screw pump on vial & shake for 1 minute until powder dissolves. Bubbles will form. Now it's ready to use & will stay fresh for 6 months. Apply 1 pump in AM to clean, dry face, neck, chest, & hands, or mix into your daily DE smoothie. Use sunscreen!