Frequently Asked Questions Medik8 C-Tetra
What is Medik8 C-Tetra Serum?
C-Tetra Serum is a lightweight, fast-absorbing vitamin C serum that protects skin from free radicals, brightens complexion and helps prevent premature skin aging.
Who is this vitamin C serum suitable for?
Suitable for all skin types, including sensitive skin, this antioxidant serum is ideal as the first step in a vitamin C routine.
What does C-Tetra Serum do for my skin?
The serum reduces fine lines, evens out skin tone, protects against pollution damage and stimulates collagen production for firmer skin.
What active ingredients are in this radiant day serum?
Key ingredients include tetrahexyldecyl ascorbate (a stable, lipid-soluble form of vitamin C), vitamin E and natural vegetable oils.
How do I use C-Tetra Serum in my routine?
Apply 4-6 drops to face, neck and décolleté every morning after cleansing, leave on and finish with moisturizer and sunscreen.
Is C-Tetra Serum fragrance free?
Yes, this serum contains no artificial fragrances and is therefore also suitable for sensitive skin.
Does this vitamin C serum help against pigment spots?
The stable vitamin C in this serum helps to reduce pigment spots and ensures a more even, radiant skin.
Can I combine C-Tetra Serum with other products? Medik8 Products?
Yes, this serum works great with other antioxidants, moisturizers and sunscreen.
Does the serum leave the skin feeling greasy or sticky?
No, the light texture is quickly absorbed and leaves the skin feeling fresh and comfortable without stickiness.
Is C-Tetra Serum vegan and cruelty-free?
Yes, this vitamin C serum is vegan, cruelty-free, and free of parabens, palm oil, phthalates, and alcohol.
Does this antioxidant serum also protect against pollution?
Thanks to the powerful antioxidants, C-Tetra Serum protects the skin against damage caused by pollution and other harmful external influences.
Can I use this serum under makeup?
Yes, the light, non-greasy formula is ideal as a base under make-up.
Is C-Tetra Serum suitable for daily use?
Developed for daily use, this serum provides visibly more radiant, even-toned skin when used consistently.
When will I see results with C-Tetra Serum?
Many users notice a fresher appearance within a few days; after a few weeks, complexion and skin texture are visibly improved.
Can I use C-Tetra Serum during pregnancy or breastfeeding?
Yes, this formula is safe to use during pregnancy and breastfeeding.
Which countries do we deliver to?
We deliver C-Tetra Serum quickly and reliably throughout Europe, including the Netherlands, Belgium, Germany, France, Luxembourg, Austria, Ireland, Poland, Spain, Italy, Monaco, Czech Republic, Denmark, Portugal, Finland, Sweden, Romania and Greece.
Do you have a discount on this product?
Yes, you will receive an additional discount on this vitamin C serum by logging in via
your account and sign up for our
newsletter for an extra discount on your order.
What is the delivery time of C-Tetra Serum?
Orders are usually delivered within 1 business day in the Netherlands and Belgium. For other European countries, the delivery time is on average 2-5 business days, depending on the country of destination.
Are you an official sales point for Medik8?
Yes, we have been officially registered since 2013 Medik8 point of sale and are among the few suppliers who are allowed to sell the entire range. You will find all of the Medik8-products, guaranteed authentic and delivered quickly from our own stock. This way you are assured of expert advice, original products and the best service.