Medik8 C-Tetra – Balancing Vitamin C Serum For Face – Smooths Fine Lines and Wrinkles – Face Serum with Squalane – Vegan and Gluten Free – 1.0 oz
$52.00
Price: $52.00
(as of Oct 05, 2025 06:40:18 UTC – Details)
From the brand
Results Without Compromise
Medik8, is a B Corp certified, British dermatological skincare brand, globally renowned for age-defying results without compromise. On a mission to simplify the route to great skin, Medik8’s CSA Philosophy of vitamin C plus sunscreen by day, and vitamin A (retinoids) by night delivers results in 3 easy steps.
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Clinically Proven Results
We truly pride ourselves on the visible skincare results our customers achieve. It’s down to our choice of the best professional grade active ingredients expertly crafted into beautiful to use products – all without needing a prescription. Clinically proven via independent studies, robustly researched and rigorously tested.
Dermatologist Recommended
“Medik8 products simplify your daily skincare and offer professional-level results.”
Dr. Vasile, Double-Board Certified Dermatologist
Meticulously Made by Us in the UK
We craft and manufacture virtually everything ourselves from our own ISO-certified Innovation Centre, just outside London, UK. Harnessing the highest quality ingredients alongside patented technologies, means you can be assured of consistent UK standards of excellence in every product.
Patented Technologies
From the Experts in Vitamin A
Our Founders’ Story
Founded in 2009 by UK scientists and brothers, Elliot & Daniel Isaacs, Medik8 is renowned for skincare innovations.
Medik8 is proud to be 1 of only 66 beauty manufacturers worldwide with an esteemed social and environmental impact certification. When you buy Medik8, you can be assured you’re not compromising on sustainability values like helping to reduce carbon, plastic waste or prioritizing renewable energy.
Is Discontinued By Manufacturer : No
Product Dimensions : 2 x 1.3 x 4.5 inches; 3.2 ounces
Item model number : 630503
UPC : 818625023317
Manufacturer : Medik8
ASIN : B002KKZQ84
Best Sellers Rank: #19,470 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #412 in Facial Serums
Customer Reviews: 4.2 4.2 out of 5 stars 418 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
SMOOTH, NOURISHED SKIN. This lightweight vitamin C serum for face is ideal for beginners, supporting smoother texture and hydration. The face serum for women and men works gently as a daily hydrating serum for face for all skin types.
DOUBLE THE RENEWING POWER. C-Tetra Luxe is an upgraded vitamin C face serum enriched with Vitamin E, Red Ginseng, and Vitamin F. This advanced anti aging serum and antioxidant serum for face supports visibly firmer, resilient skin.
BOOSTING MOISTURE AND BALANCE. Featuring stabilized Tetrahexyldecyl Ascorbate, this squalane-based skin serum delivers hydration and clarity. The facial serum helps maintain an even tone, making it a versatile hydrating serum.
CLEAR AND EVEN-TONED COMPLEXION. Infused with jojoba, this serum for face absorbs quickly to moisturize and smooth. A refreshing face serum for women anti aging and face serum for men, it restores skin to a balanced, even look.
SCIENCE-LED SKINCARE INNOVATION. Medik8 designs advanced facial serums backed by research. Each gluten free and vegan serum is formulated by in-house scientists to deliver reliable, effective results for long-term skin health.
Customers say
Customers find the vitamin C serum effective, with one noting their forehead wrinkles became less visible, and they appreciate its healthy glow and silky texture. The product has a mild citrus scent and receives positive feedback for its quality. Regarding skin irritation, while some customers find it gentle, others report breakouts and itchy bumps. Customers disagree on whether it’s worth the price.
13 reviews for Medik8 C-Tetra – Balancing Vitamin C Serum For Face – Smooths Fine Lines and Wrinkles – Face Serum with Squalane – Vegan and Gluten Free – 1.0 oz
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$52.00
Ramona Nolan –
Gentle, Effective, and Great Value â My Go-To Vitamin C Serum
Iâve purchased this serum three times in the past 15 months and use it every morning. Each bottle lasts me about 4-5 months, making it a great value. Unlike many vitamin C serums that leave your skin feeling tacky or stickyâor cause other products to pillâthis one absorbs beautifully.I struggle with sunspots (thanks, Dad!), and this has faded them to the point of being nearly invisible. I have dry, sensitive skin and have had no issues using this product. While the recommendation is four drops, I tend to use more, applying it to my face, neck, and chest, then using any leftover on the backs of my hands. The serum has a lovely silky feel and a mild citrus scent that I really enjoy.One thing to note: the glass bottle and dropper require care. I accidentally dropped a dropper in my sink, and it shattered. Thankfully, I already had a backup bottle ready.At 57, I know the importance of following up with a good sunscreen, and I highly recommend doing so. Overall, this is an excellent vitamin C serum that delivers real results and is well worth the investment!
Adelina Nguyen –
A must try!
I’ve had my fair share of Vitamin C serums that left my skin irritated and prone to breakouts, but this one is a game-changer! It’s surprisingly mild, yet still delivers noticeable results. My skin feels brighter and more even without any of the harsh reactions Iâve experienced with other formulas. Itâs gentle enough for daily use, and the light citrusy scent is a lovely touchâitâs refreshing without being overwhelming. If youâre looking for a Vitamin C serum thatâs effective but wonât irritate, this one is definitely worth trying!
Sam –
Sooo goood!
It works! Itâs been 10 days am and pm regular care, I used medik 8 tonic as well. I am 33 y.o and ,LOVE THE RESULTS. My skin not only looks much better but feels to touch better, my forehead wrinkles became less visible and more moisturized, I actually can not believe to such fast results. Someone was complaining on absence of smell but I do smell citrus otes in serum which is nice. Love it! Would def recommend and buy again
Yasmine –
Top 1 best vitamin C, even for mix skin tone
One of the top three vitamin C Iâve ever had. This product is really good. I read the reviews and they say itâs too oily, but itâs not. Just used a little bit. LESS is more. I am putting four star to make it look human. I am a real customer and five makes it look sus. But yeah, it is five star.
Ella –
You wonât be disappointed
Love the result . I wasnât sure about that stuff because of the price but I got it and today first time tried and love it . Itâs worth the price my skin is super hydrated
Pat –
Gave me an intense, itchy rash that required topical steroids
I want to preface this by saying that I have other products by this brand that I love, but this one did NOT work for me. Worse, it broke me out in an itchy rash that required a steroid ointment. I don’t usually have overly sensitive skin, and I have no known allergies. The first time I tried it (at night) my skin did not react immediately, but I woke up the next morning with a bright red face and itchy bumps all over my skin. I still wanted to give it the benefit of the doubt, because I used other skincare actives the night before, and I thought that maybe it was just too much. The next night, I applied it to my decollete and neck, where my skin is less sensitive, and no other actives were used. However, the rash I woke up with was even worse, and I ended up having to use a prescription-strength steroid cream for two days to calm it down. I did return this product for a full refund, there was no issue.
Candice –
I am a repeat buyer.
I am a repeat buyer and this is never not in my routine. I love the glow, I love the feeling and I love the result
Melissa –
Not A Serum
This is not a serumâitâs a face oil! I personally prefer serums that quickly absorb into the skin and this one does not. Itâs great for no make-up daysâbut doesnât blend well with foundations. Smell is pleasant and subtleâ¦not overwhelming like some vitamin C products.
Nikulina –
Ottimo
Cliente Amazon –
Esta va tiamina C es maravillosa.Llevo años usándola,da vida a la piel de una manera increÃble.La mejor de todas las usadas,Medik 8 no falla nunca
Mamali –
Nurmal
Rebecca spendlove –
I love this product! Smells so nice like oranges! Is light weight but very moisturing, I an see the results on my face. Iâve been using morning and night for 3 months now and my skin is a lot clearer, brighter an feels alot healthier.
ZoBa –
Prodotto ottimo, non unge e la mia pelle lo assorbe in maniera ottimale, ormai un anno che lo uso tutti i giorni. Una boccetta ha una durata di 6 mesi circa, rimanendo nellâutilizzo quotidiano di 3 gocce sul viso