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    Medik8C-Tetra<p>Two key antioxidants &#8211; vitamins C and E &#8211; make the C-Tetra your new Holy Grail serum. Perfect for everyday use with its light formula, C-Tetra sinks past the defensive lipid barrier and deep into skin, for extra protection against sun and pollution-induced damage.&nbsp;</p><p>This formula visibly stimulates the production of collagen and elastin while also brightening and balancing skin tone as it protects your skin from premature ageing. C-Tetra uses tetrahexyldecyl ascorbate, an uber-effective source of vitamin C that not only allows for deeper penetration, but results in less irritation &#8211; important for sensitive skin types. Brightness is then boosted by red ginseng and maracuja oil, which is naturally rich in vitamin E. Vitamin E perfectly complements the vitamin C, delivering a nourishing dose of hydration to give a soft, glowy complexion. As luxurious as it is efficient, C-Tetra treats you to an uplifting scent of sweet orange, sans any artificial fragrances&nbsp; &#8211; the perfect way to begin your morning.</p><p><br></p>MED005224368186250209895 stars, based on35 reviews 35.00Cult BeautyNew
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    Medik8 C-Tetra

    Medik8
    C-Tetra
    ( 30ml )

    £35.00
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    • Why it's Cult

      With their tried-and-tested ‘CSA philosophy’ – a hard-working marriage between vitamin C with sunscreen by day, and vitamin A by night – Medik8 seeks to create simple routines that result in healthy, ‘beautiful skin for life’. The goal is to uncloak the mystery surrounding anti-ageing skin care with results-driven products that don’t compromise on ethics. Championing sustainability, cleaner oceans and less waste, Medik8 is a brand with heart – one that began with a simple love for family. After creating an anti-redness product for his sister, Medik8’s founder Elliot Isaacs went on to create the powerhouse that is Medik8 today. Boasting handy all-rounders like the C-Tetra serum, you need to introduce a batch of Medik8 to your bathroom cabinet, stat! This best-selling formula helps to restore radiance and fights premature signs of ageing with vitamins C and E – a results-driven combo that’s proven to work against sun and pollution-induced damage for more youthful, rejuvenated and nourished skin.


    • Description

      Two key antioxidants – vitamins C and E – make the C-Tetra your new Holy Grail serum. Perfect for everyday use with its light formula, C-Tetra sinks past the defensive lipid barrier and deep into skin, for extra protection against sun and pollution-induced damage. 

      This formula visibly stimulates the production of collagen and elastin while also brightening and balancing skin tone as it protects your skin from premature ageing. C-Tetra uses tetrahexyldecyl ascorbate, an uber-effective source of vitamin C that not only allows for deeper penetration, but results in less irritation – important for sensitive skin types. Brightness is then boosted by red ginseng and maracuja oil, which is naturally rich in vitamin E. Vitamin E perfectly complements the vitamin C, delivering a nourishing dose of hydration to give a soft, glowy complexion. As luxurious as it is efficient, C-Tetra treats you to an uplifting scent of sweet orange, sans any artificial fragrances  – the perfect way to begin your morning.


    • How to use

      After cleansing in the morning, massage 4 drops across the face, neck and décolletage. Leave to absorb before applying moisturiser.

      Please note: the visual and product name listed may differ to the packaging received due to product updates across the range. Rest assured, the formula and great results will remain the same.

    • Full ingredients list

      Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.

    • Cult Conscious

      Transparency lies at the heart of our philosophy which is why we have partnered with tech-platform – Provenance – to cut through the industry ‘noise’ and equip you with key facts that matter. A 'proof point' with a green tick means a third party has verified the accuracy of the statement whereas no green tick means that there isn't independent confirmation (yet!), but that the brand has still supplied substantiating evidence (which you can view yourself). Discover the proof points for this product below.

    View our Shipping Policy here

    Need help? Contact us referencing product code MED005

    Reviews
    Medik8 - C-Tetra

    Medik8 C-Tetra Reviews

    A Winner!
    Second purchase and this teams up so well with their Advanced Day Ultimate Protect. I’m going to stick with Medik8 as I’m so impressed with their products having also used Daily Radiance Vitamin C. Highly recommend it!
    Medik8 - C Tetra
    First time using Vitamin C and I’m so glad I decided to go for this one. Skin feels great and everyone has noticed a glow. LOVE IT.
    Love it
    ❤️
    Didn't work for me
    I was previously using drunk elephant, but wanted something that would brighten my skin a bit more. Unfortunately, this broke me out and now I have more dark spots and it has dried my skin out . I spent money on a full bottle and am trying to stick it out. But I'm getting more breakouts of little spots which is depressing as my skin routine was really working before I started using this. I will go back to using Drunk elephants vit c serum.
    Medik8 c tetra
    My holy grail, I have used this product for years and years. I’ve tried other vitamin c serums and nothing matches C-Tetra. I do not buy anything else now, my skin is so dewy and I am 50 years old, I suggest everyone buys this. You will not be disappointed.
    Life-changing
    I’ve used stable vitamin c products before which don’t irritate, so the brightness was great but expected. However, what did impress me is that after less than a week’s use my skin is bouncier and firmer. Just for context - I have lupus and I have the butterfly rash and other rashes across my face which damage my skin, affect collagen production and also impact my confidence. But to have a vitamin c product that isn’t harsh on the most sensitive of sensitive skin, pack it with other vitamins too and leave it bright, firm and bouncy is impressive and has given me a confidence boost.
    Smooth skin
    This Vitamin C serum leaves your skin very smooth after applying it. I normally apply this in the PM after cleansing and toning, leave for 4-5 mins and you can already see the glow then I follow up with a moisturiser.
    Excellent product
    This serum is fab. It brightens but is not too harsh. Works brilliantly with a range of moisturisers, and now a staple part of my routine! Highly recommended.
    Best Vit C for sensitive skin
    This stuff is amazing. It does feel more oil-based than other Vit C serums I've used, but having relatively dry and redness-prone skin, it's so nourishing and absorbs perfectly. Repurchased multiple times.
    Good under make up
    I use this on a morning and layer it with a hydrating serum and an SPF and it soaks in the skin quickly especially for an oil making it good to wear under your make up. I was using the Ole Henriksen vitamin c serum but swapped to this.
    Wonder Serum
    Been using this light serum for around 3 weeks now and have been mightily impressed by the results. It works beautifully as the base to layer heavier serums and moisturiser over. My skin looks brighter and I was even asked by a colleague what I was using as my skin looked so good. Great price too.
    Over hyped product with very little results
    I had heard great things about C Tetra but after using it for a while now, I haven’t seen any change in my skin, it’s a bit oily, and at times it makes my skin feel a bit too oily.
    Makes skin BRIGHT
    What I love about C-Tetra are the amazing brightening effects! After using so many actives in the same routine without the same outcome, I was surprised to see that my skin carved this. The texture is so smooth and the formula is very stable. I will still experiment with different formulations, as the oil base might be a bit too much for my skin during summer.
    Don’t understand the hype
    I had such high hopes for this after reading all of the amazing reviews; however, it didn’t live up to the hype for me, unfortunately. I’ve been using the C-Tetra every morning for a month now, followed by SPF, and haven’t noticed any difference whatsoever to my skin. I was tempted to try the Intense version but at almost double the price, I’m not prepared to risk that being a waste of money too. 2 stars as it smells delicious and the consistency is good.
    Glowy Skin Recipe
    My first purchase from Medik8 and it highly satisfied. I can't tell you how much I'm in love with an oily texture that leaves my skin even, bright, plump and GLOWING. I have combo skin and have used many Vit C's before, this one is the best one even though it wasn't the most expensive one. I was a bit iffy about the packaging first but, it is a stable form of Vit C meaning it doesn't oxidise.
    Love the scent...
    This serum smells amazing and absorbs really well into the skin too!
    The Best
    This is the BEST Vit C serum I have ever used. The texture is amazing and after two days in my skin texture, glow, plumpness is much improved. I am very impressed and will be slowly getting more Medik8 products as current ones run out.
    Beautiful product
    Such a lovely serum, my skin looks brighter and more glowy immediately after using. A really light formula, reasonably priced and lasts a long time too! Highly recommend.
    Worth the hype
    Love the texture. Perfect for my combination skin. Not too oily but keep my face smooth. Really works under makeup.
    Maravillosa - Marvellous
    No ensucia y cumple su función perfectamente. It does not oxidise and it does its job perfectly.
    Love it!
    I love having vitamin C in my routine and often find some products have a funny smell - not this one, it smells so good! I use this every morning and it leaves my skin so glowy - I’ve recommended it to all my friends!
    Gentle but not life changing
    I do like the consistency of this, it’s like an oil serum hybrid that’s very lightweight and sinks into your skin. It had a slight orange smell which I do enjoy since it’s not too potent and they didn’t overdo it with 200 different essential oils lol. However, I can’t tell if it’s doing anything because my skin definitely is smoother and brighter but I’m not sure if it’s the serum or the Ren toner I’m currently using. Either way, this product isn’t too bad but for the amount you get, the price and how fast you run through it I probably wouldn’t purchase it. I got this in a goody bag and that’s the only reason I got to try it. It is my first vitamin C which I’ll probably finish in a week and I have the YTTP Vitamin C to try once I’m done with this so I may have to update my review.
    Amazing
    Love it. My skin looks brighter and it absorbs fast. I will order again.
    its an OK product
    I had more expectations of this product, it feels nice on the skin and my skin absorbs it quickly.
    Love this!
    First time using this vitamin c and love it! Love the light texture and absorbs really nicely under my moisturiser!
    Smooth and Sweet
    I’ve been looking and trying so many different Vitamin C serums, trying to find one that isn’t tacky and combines nicely with other products. This is the nicest I’ve tried yet, it doesn’t have an off putting smell and it makes my skins feel so soft and look bright afterwards. I’ve been using it for a couple weeks now and I have definitely seen a difference in my skin. Kinda pricey compared to other serums out there but I would definitely say it’s worth it!
    Perfect for Sensitive Skin
    My skin is sensitive due to using prescription strength retinol. Other vitamin C serums have really irritated my skin but this one doesn’t at all! I’ve been using for over 2 years now and hardly have any pigmentation and a bright complexion. Lasts for ages too. Recommend!
    Fast results!
    I’ve been using this serum for a month and can already see a change in my skin’s appearance. I have dehydrated oily skin and the texture and absorption suits me perfectly. Not too oily and hydrating. It also smells nice!
    Nice
    You can get similar or even better Vitamin C out there for the price....but it is a good serum,even though I may not buy it again.
    Doesn't work at all.
    I have been using it for a month now and see no difference at all. It caused such bad breakouts first.
    Disappointed
    I really wanted to like this product, especially because the brand has all-around raving reviews but it brings me out in spots and makes my skin really dry! I’ve tried this product on three different occasions, weeks apart, and each time get the same dissatisfied outcome. Which is really a shame. Also as other reviewers state it’s has a runny oily consistency, but it absorbs quickly and doesn’t leave a greasy film.
    The Best
    I previously used the Pixie Vitamin C and was really disappointed, I found it made zero difference to my skin and it also caused the inside of my hands slightly orange. My sister recommend this particular oil and swore by how good it was. And honestly, it did not fail. Within the first week, I noticed a massive difference in how bright and smooth my skin looked. I highly recommend it and will forever purchase this oil.
    Beautiful texture but result
    Let's talk texture! It's a light nongreasy oil that glides beautifully onto your skin. Quickly absorbs and leaves skin feeling soft. It's obviously not a moisturiser so make sure you have one on hand to apply on top of this. It's been a few weeks and I don't really see any results
    Surprisingly amazing
    I had high expectations for this product and I must say it did deliver. Love the texture, the subtle scent and the results. Gentle and effective, works really well under make up and it's great value for money as the formula is stable enough to last longer compared to other vitamin C serums. Terrific, I love it.
    Nice texture
    Nice texture and smell. In terms of results, i did not use it for long enough to see if it actually works.
    See all 35 reviewsHide 30 reviews

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