Eucerin Hyaluron-Filler Vitamin C Booster 8 ml is a serum with pure vitamin C, which is mixed with the fluid right before use. The serum has an antioxidant effect that acts to rejuvenate and refresh skin. With hyaluronic acid that diminishes wrinkles and boosts collagen. Lightly fragranced. Very skin friendly and effective according to clinical and dermatological studies.Pull off the protective film but leave the cap on. Press the soft button at the bottom 2-3 times to dispense vitamin C. Shake the container for at least 10 seconds to activate the formula. Twist to remove the cap. Turn upside down and then press the soft button to dispense the booster.8 ml Eucerin Hyaluron-Filler Vitamin C Booster 8 ml