Review topics: [skin, serum, feels, smell, absorbs, vitamin c, glow, looks, texture, results, difference, size, buy, oil, face, formula, irritation, use, works, c-tetra, improvement, bottle, consistency, vit c, effect, reaction, spots, medik8, lines, complexion].
Reviews
Broken Bottle - the top squeeze part came away from the lid
"I loved the product - however I was only able to use it for approx a week due to the bottle breaking and the entire bottle emptying out into my make up bag - so I feel I wasn't able to get a proper testing of the product. However what I did love was the feel of it - it applied to my skin so smoothly and smelt amazing!"
— Kelly F. (5/5)
A great vitamin C serum for brighter, healthier-looking skin.
"I’ve been using Medik8 C-Tetra and really love how lightweight and comfortable it feels on the skin. It absorbs quickly, gives a healthy radiant glow, and makes my complexion look fresher and more even over time. My skin feels smoother, hydrated, and more energized in the mornings. It’s gentle enough for daily use and layers well with other skincare products."
— Iryna Y. (5/5)
Amazing vitamin C!
"C-Tetra has become one of my favorite vitamin C serums because it brightens my skin without irritation. The formula feels nourishing and gives such a radiant glow, especially in the morning under sunscreen and makeup. My complexion looks more even, healthier, and more refreshed since adding it into my routine. It’s perfect if you want the benefits of vitamin C without the harshness some stronger formulas can cause. Medik8’s vitamin C line is also often praised for being gentle yet effective for glow and antioxidant protection.  Together, these two products make my skin look smoother, brighter, hydrated, and overall more youthful. Expensive? Yes. But for me, absolutely worth it."
— HA N. (5/5)
Ii bought The Vitamin. C
"Ii bought The Vitamin. C serum , I was skeptical to buy the product at first but i am so happy with the product itself and the results it has given me. The serum is not sticky like some other brands in the market that I’ve tried. As soon as it touches my skin, it just makes it so smooth and the feeling is so nice. I am definitely be buying another bottle and will try their other range. It’s a five stars for me!"
— Cheryll C. (5/5)
Gentle yet effective vitamin C
"A fairly simple yet effective vitamin C serum. Fairly low vitamin C content and just natural fragrance ensure this is well tolerated, even by sensitive skin like mine. I like the way it balances my skins moisture level, which is a welcome side effect. Would recommend this to people with dry sensitive skin, who find it hard to tolerate harsher alternatives."
— Sabine H. (5/5)
Beautiful Glow and Amazing Scent
"I use this serum every morning after toner and absolutely love it. It needs a minute or two to fully absorb, but after that my skin feels comfortable, smooth and never greasy. There’s no heavy film at all. The scent is amazing — fresh, uplifting and honestly gives me such a nice mood boost in the morning. After it absorbs, I apply my SPF and everything layers beautifully. My skin looks healthy, radiant and glowing."
— Daria (5/5)
Sivilce yaptı
"Hayatım boyunca hiç sivilce çıkarmayan ben 36 yaşımda ağrılı deri altında kolay çıkmayan ve geçmeyen sivilceler çıkardım. Ürün güzel yumuşacık ama bana yaramadı."
— Sibel D. (2/5)
Impressed so far
"I'm new to vitamin C serums and this one seems to be doing a decent job of brightening my complexion. It's non drying on my sensitive and dehydrated skin, however it does leave a slight residue and adds a little shine. The good news is that it sits well under my matte SPF which means I can continue using it. Next time I'll probably go for the Luxe version since I had no adverse reactions to this weaker formula."
— Garry M. (4/5)
10/10
"Medik8 C-Tetra has quickly become a staple in my skincare routine. The lightweight, silky formula absorbs into my skin without leaving any greasy residue but leaves me with a lovely glow. After a few weeks of consistent application, I noticed a visible improvement in my skin’s brightness - it looked radiant, even-toned, and healthy. I’ve also received several compliments on how fresh and glowing my skin looks. It has been gentle on my skin with no irritation following daily use."
— Becky O. (5/5)
Glowing skin in a bottle
"I’m obsessed with this serum! It gives my skin such a healthy glow and feels very gentle. The texture is lightweight and absorbs quickly without leaving any stickiness. My skin looks brighter, smoother, and more radiant. It’s perfect for my morning routine and works great under moisturizer and makeup. Definitely repurchasing!"
— Anhelina H. (5/5)
