Medik8 C-Tetra Lipid Vitamin C Antioxidant Serum 30ml 30ml
Is this for you?
Fight visible signs of ageing, restore radiance and repair free radical damage with the new and improved Medik8 C-Tetra. This serum is stronger than the previous C-Tetra formula, with 100% stable Vitamin C that remains potent and highly effective until you've finished the bottle!
- Cruelty Free
What customers say
- Dull, dry or dehydrated skin
- Pigmentation, uneven skin tone
- Normal to dry
Frequently bought with
Please wait while we find a match
Questions & Answers
Medik8 C-Tetra Lipid Vitamin C Antioxidant Serum 30ml
Get an expert to answer your question about this product!
Customer ReviewsReview & Earn
4.3 of 106 reviews
90% recommend this product
Most Helpful Positive
Most Helpful Criticism
No improvement in skin
Smells nice, some brighteningI used this Vitamin C serum for about 6 months as a cheaper alternative to the Skinceutical's C E Ferulic serum.
I won't be going back to this one - it did help my skin, but it definitely does not brighten nearly as well, and feels 'oilier'. Spreads easier due to this but this is likely due to the filler they put in the product. Nice orange scent but is in keeping with artificial feel to it...Read More
Convertedverified purchaserI love this product! I received it in one of my boxes as a sample and started alternating it with my old vitamin c serum before I quickly became a convert and needed to buy it myself. I love the smooth oily texture of this serum and the hydration boost it gives my skin. My skin feels so soft and even toned. Loved it and needed to add to my collection!
Love it, fave Vitamin C serumverified purchaserLove this serum, have really noticed a difference in the texture and brightness of my skin. No side effects with this one either!
Nice Vit C serumI enjoyed this Vit C serum, it didn't clog my pores or cause sensitivity. I'm not particularly concerned with pigmentation, my skin is quite clear and i'm religious with spf but its great as an antioxidant serum to protect from free radicals and pollution. I would re-purchase, it also lasted ages.
brighteningThis product is a great second step (after toner) for your morning routine! It keeps my skin feeling refreshed and looking bright all day! plus it smells amazing! A bit pricey but definitely worth it!
moisturisingthis product has improved my skin as feels more moisturised, have only used for a few weeks at this stage so haven't noticed any improvement in the way it looks, but feels better.
Will keep using but would prefer an easier way to apply.
Using the dropper makes it hard to apply.
Great Vitamin C optionI got a generous sample size of this along with a purchase a while ago. I have started using it and have not been excited about a vitamin c serum since the first one I tried.
I have used some other vitamin C serums before and this is my favourite texture and smell so far. I used to use vitamin C more because I feel I need it, even though I didn't enjoy how it feels applying them. Now ...Read More
Rarely use but good serumverified purchaserIm in my 20s and find this serum I only use occasionally. If I use it daily or too much it tends to dry my skin but I found its great for bruises and the darkness under the eyes! Great added to a moisturiser but I don't use it enough to probably purchase again!
smells greatsmells great and you don't need much, but didn't notice much of a difference in my skin
Did Not Agree With My SkinI really liked this serum but my skin certainly didn't. I really love the citrus scent of this product and my skin did look noticeably brighter after application. However, this product irritated my skin something shocking. It made my blemishes angry and gave me clogged pores as well as a rashy appearance to certain areas of my skin. I have used it on and off but the same reaction occurred each tim...Read More
Worth the moneyI am just getting to the end of the bottle after purchasing five months ago. Since I have added daily vitamin C in to my routine I have noticed my skin is the best it’s ever been. My husband and I use it almost every day so it does last a long time. My pigmentation has definitely faded and my skin looks well cared for. I have been evangelical about applying sunscreen since I was 22 (I’m 24 now) bu...Read More
Beautiful textureThis is by far my most favourite serum.
It's smells divine and you don't need much.
I have tried other serums over the years but always come back to this one.
It absorbs nicely and fairly quickly into your skin.
Highly recommended for normal to dry skin
Great intro Vit C!I've used products with Vit C in before but this is my first purely vit c serum.
My skin seems to really like it!
I use in the AM. Goes one well, smells lovely and leaves my skin glowy and fresh.
Have to wait a minute or two before using my next product or putting makeup on though.
I'm yet to see any major improvements, but after a couple of months of use i'm still liki...Read More
its oknothing amazing. not much change to my skin
gift turned loveReceived as sample, ended up falling in love. feels amazing on the skin has been perfect for my sensitive, acne prone skin
Non irritating vit c!I purchased this serum after recieving a sample, I had previously used vitamin c years ago and I was under the impression that it broke me out. After a retry I am sold. This serum has not irritated and I have found a small effect of brightness and elasticity, particularly on my forehead and around eyes. My one wish is that it was a little thicker, it really is like water. I mix it with my extreme ...Read More
My new stapleI have tried a few VitC and this is my preferred. Has a lovely citrusy scent, absorbs easily into my skin and sits well under makeup. Love it.
Non irritating, just a gorgeous glowI received a deluxe sample of this and it’s one of my fav Vit c serums. It wasn’t irritating but I noticed a difference in clarity after two weeks use and an immediate glow!
LoveI love putting this on in the morning, it leaves the most amazing glow. Was hesitant at the price but a tiny bit goes a long way so it will last ages!
No improvement in skinWanted to love this product as I have some hyperpigmentation and was looking to add vitamin C to my regimen. It smells lovely, the best smelling vit C serum I have come across, however I didn’t see any noticeable improvement in my skin. In fact, I think this product did not agree with me because I noticed my skin to look more dull and makeup did not sit as well on the days I used it. Will just hav...Read More
CitrusI love the citrus scent. The serum has a thicker consistency. I found it left an oiler residue compared with other serums. My skin feel bright, smooth and soft after use.
Nice serumNice serum I like it a lot. Last forever and has given a beautiful glow to my skin.
Broke My Skin OutThis products smells lovely but feels quite oily at first. It does soon absorb into the skin. My skin did feel very soft afterwards but the serum brought me out in spots all over my chin and around my nose. I haven’t had a single spot in about six years so this was obviously very disappointing. I waited a week and tried again and the same thing happened. A waste for me unfortunately. FYI. I have n...Read More
Didn’t do anythingThis was the first vitamin c serum I bought and although it is lovely on the skin and gives you an immediate glow, I believe that is only due to it being an oil type serum. I have used the entire bottle over the past 4 months and have found no long term benefits. I probably won’t repurchase as I want to try other vitamin c serums.
Great valueI got this as a free gift with Adore Beauty and use it regularly. The formula is easily spread so you do not need a lot. My skin has been looking more radiant and it has calmed a small irritation on my skin when utilised with other active ingredient products.
Great for people looking to use this over the whole face as you will be quite a few uses out of it.
AdditionForgot to mention in my review that I was also impressed that it doesn’t appear to have oxidised in this slightly oily formulation which is great
LovelyI can’t stand the smell of vit c, it really bothers me on my face and hands until I’ve washed it off but this one was not an overwhelming smell so that’s a huge plus for me. Not really seeing any miracles but I have been using c serums for some time so perhaps it’s keeping the magic alive. Certainly my skin has not gone backwards
Best vitamin c serumI am loving this serum and is by far the best I have tried. A little goes a looong way so this will last you awhile. My skin is glowing and so much more healthier looking than before
Fresh citrus smellI absolutely love the smell of this product i haven't used other vitamin c products before so I don't have anything to compare it to, but I'm so happy with this i don't feel the need to try anything else. I feel like It gives me a glow from within. I sinks into my skin and doesn't leave any type of oily residue. And the tiniest bit goes the longest way too will definitely last you a long time.
Irks me that they refused to give a percentageAs far as I can tell it only has 7% tetrahexyldecyl ascorbate which is nothing when you compare it to TO Ascorbyl Tetraisopalmitate Solution 20% in Vitamin F. I don't like it when companies try to pull the "there are so many forms, percentage doesn't matter" when no, there is only one form in this serum and yes it certainly does matter! Also minus points for the volatile citrus fragrance...
Lovely serumI received the deluxe sample of this and am very happy with it. It applies wonderfully with zero irritation and layers under other products and makeup really well.
A little goes a long way so it will last you a while.
Unfortunately I wouldn't purchase it myself due to the high price point, but if you can afford it then I would recommend to go for it as it really is one of...Read More
Beautiful SerumI got a trial size of this thanks to Adore, and have really enjoyed using it in the mornings. However, due to consistency I felt like I went through the 10ml bottle pretty quickly so I would be concerned that the full sized bottle wouldn't last very long for the price.
Really enjoying this serumI received a trial size of this serum (thanks Adore!) otherwise I probably would not have tried it, but I'm so glad I did! I'm really enjoying this serum as an alternative to other vitamin c skin products. I use it at night after cleansing. It absorbs quickly and easily and my skin now seems noticeably less dull.
Good for startersI was recommended this product by aesthetic clinic to treat small brown spots on my face as it is milder as compare to their strong range .I will definitely go for their extra strength range as I am liking the results.
Great Vit C SerumI was quite sceptical to try this serum - I have oily skin and was concerned it may be too oily. I use this serum in the morning after cleansing - followed by moisturiser and SPF. This serum really soaks into your skin, and I find i'm not oily at all! My skin feels like it glows. I find it best to 'drop' the product straight onto the face works best.
Power of orangesGorgeous light serum. I’m a huge fan of serums so was excited to try this. It’s quiet watery but goes on very easily and is absorbed almost straight away. Feels lovely and light and is great for applying in the morning! I absolutely love the smell reminds me of orange zest! Which is a lovely little pick me up in the morning. Highly recommend
Not sure yetI've been using this product for just over a month and don't yet know how I feel about it.
The texture is very strange, it is not really a serum and more so a thin oil.
I use this in the morning before my sunscreen and will keep going until the bottle is finished so I can truly make up my mind!
If you can get over the strange texture I would give this a go,...Read More
Brighter complexionI received a free sample of this. Texture is nice. Gentle. No irritation. I noticed my complexion is a bit brighter after using for a week. But it hasn’t faded any marks yet. Will continue to use.
Skin care stapleI have normal to oily skin. I put this on in the morning after cleansing, followed by moisturiser and then spf. It smells amazing, feels like a very light oil but soaks In straight away. I found from using this I no longer need to use a primer. It leaves my skin feeling glowy and makeup sits perfectly over the top. Will definitely repurchase.
GoodI have had this serum for about 6 months now. I only use it once a week because it is really strong and I find if I over use it or put too much on it dries out my skin and goes flakey the next day. Sometimes I mix it with a moisturiser too. It doesn’t make the skin feel oily and great on before bed.
It works!Wow! I’ve used this for exactly a month now, and I’ve already seen results. I had a long thin crescent shaped splotch on my upper cheek, and it’s already half the length and width it was. The pigment on my nose is more stubborn, so I will keep using this daily to see what happens. Careful with the dropper though, you only need 4 small (short) drops, but if you accidentally squeeze too long you end...Read More
Glowing SkinI was given a sample of this serum after getting a skin peel facial and have been using it for 4 months. I would highly recommend this product to someone who is suffering from acne scarring and breakouts. I have tried and spent money on so many products and this was one of the products that helped my skin clear up besides proactiv.
Best vitamin cI recieved a delux sample of this and been using it constantly. It last forever as only a little bit is needed so a full size bottle should last quite a while. It has improved my skin so much, it gives me a lovely glow, has helped with my acne and has also made my skin look smoother and softer. 10/10
ExcellentGreat strength vitamin c. Skin has never looked better after starting this. Smells beautiful and absorbs really well!
Beautiful productI bought this after hearing the chap from Medik8 interviewed by the Beauty IQ girls and have been so pleased with it - beautiful silky texture, quickly absorbed and it seems to be working wonders on my skin. The Medik8 rationale of Vitamin C, SPF and Vit A made great sense to me and seemed to provide a very simple way forward when there are so many serums and products claiming to do the same thing...Read More
Current FaveLoving this! It leaves my skin looking so bright and radiant. I have normal/combo skin that gets dehydrated easily and I find this keeps me hydrated but not greasy. It sits really nicely on my skin and works well with moisturiser and SPF over the top. I let this soak in for a few minutes before applying any other products over the top. Can't go past this vitamin C at the moment for me :-)
Wow! Just wow!Ive tried a lot of of these serums and whilst it's a tad runny on application, it does quickly absorb into the skin making the skin feel devine. I do think it's delivered on its promise of radiance and this product will def become part of my daily routine. I love it!
Liquid glow in a bottleAfter purchasing a bottle of this vitamin c serum, the results were instant! My pigmentation has minimised by 50% and my skin actually glows! I am now confident to wear no makeup on my days off and love the feel of this on my skin. My skin now feels super smooth. I would definitely recommend!
One of my favouritesLove this vitamin c oil. I use in the morning and it leaves my skin so soft and glowy. Feels so nourishing without an oily feel to the skin after
RadianceThis is really good at giving you a nice radiant glow. I use each morning for past 3 months and find it to be quite good at brightening my face and keeping my face moisturiser and protected from free radicals. I really enjoy using this product but once I finish the bottle I would probably move onto a stronger vitamin c product. This is good for those new to vitamin c products.
Great for oily/combo skinThis serum is very thin! But once applied absorbs very quickly and leaves no residue. Has given my oily/combo skin a lovely glow.
LoveMedik8 is one of my favourite high end brands. This serum has a nice silky texture and does absorb well. Not sure if it's too oily for day time use though
Good serumI apply this every night before bed it really makes me wake up with my skin feeling nice and soft.
Great brightenerBrighten my dull complexion
Great entry level Vitamin C serumAbsorbs quickly and my skin was softer after only a few days. Good entry level for those new to. Vitamin C serum.
Medik8 cLove this product this is my my second bottle my skin has improved so much and it’s helping with my pigmentation. Love the smell of lemon and the easy application.Very economical a little goes a long way.
Great smell and resultsThis initially broke me out a little, but it’s calmed down now. I’ve noticed a big different in pigmentation from old acne scarring. My skin also looks generally more glowy and vibrant. Great smell and goes on easily, but takes a little bit to sink in. Would recommend.
Still early days but so far loving itI only started recently using this product in the last couple weeks so it’s still early days but so far I can see my skin has more of a glow to it. I have oily skin, and I did find in the first week of using this I broke out a little bit but nothing drastic. The texture is very watery so the product spreads easily on my skin. I think this product pairs well with the medik8 b5 serum, I use the c an...Read More
Great!Since using this serum my skin literally glows! Never seen it brighter or more even. Took 2 weeks before seeing the results...
LovelyI have loved using this product, although I feel that the recommended four drops doesn't cover my face and neck, I generally have to use about 6-7 drops to achieve this. Other than that this serum smells beautiful, doesn't leave my skin oily and is very hydrating. I have noticed I am less red/pink in my face since using it and my complexion as a whole is smoother. It's a good serum to for anyone j...Read More
It’s nice but very thinI found the consistency of this very thin and runny, therefore I feel like I use more product than usual trying to get enough to cover my face. It absorbs nicely and doesn’t feel greasy. Gives my skin a glow. I probably wouldn’t repurchase as I don’t like how runny and thin the consistency is. It didn’t irritate my skin either
Amazing Serum!I was recommended this product by a skin specialist and friend who really loved it. I tried it for myself and safe to say - I feel in love very quickly. I personally hate the feeling of product on my face, so I like products that are lightweight feeling and not rich in texture. This product is great for that! This has a lovely consistency that isn't think at all, as compared to many other serums a...Read More
great productsoaks in my skin straight away, making it feel nice and hydrated. pleasant citrus smell. good quality product that i use sparingly.
Smells wonderfulThis vitamin c is one of my favorites because it doesnt leave the skin feeling tingly and stingy like other vitamin c products (the ordinary). It works well to lighten pigmentation and prevent further pigmentation and as a bonus it SMELLS AMAZING, lovely orange citrus scent.
Great night and morningI use this very sparingly because it doesn't last long. It is a really quality product. It has a consistency that is a mix between oil and serum and its so light weight and almost soaks into the skin instantly. Smells natural and herbal and orange. I notice a difference in my skin the morning after using this.
perfectI use it before I apply my moisturiser \nIt leaves a smooth feel on you're skin I love it \nI would highly recommend it as a base to you're skin regime
Expensive but good productI originally received this as a sample with an order and loved it so much that I had to get the full size (even though the price is a little over the top). I apply this once every second night just before bed and my skin always feels so nice in the morning. Left it feeling soft and plump and hydrated. In the past I have not used vitamin C products because they tend to dry my skin out but not this ...Read More
Nice consistencyOil/serum like consistency. Very lightweight for wearing under makeup. I have been using this product for a couple of months now and I'm really noticing a difference in my skin's texture - a lot plumper and brighter
StrongBe wary of this one if you are sensitive to citrus/acidity on your skin. I was very excited to get this serum as I heard excellent things about it, but sadly my skin reacts to it a bit - and I do only use a few drops. If you're try a vitamin C product for the first time and get red skin, it might be good to try a more gentle serum first. But otherwise it smells great and feels awesome on my less s...Read More
Can’t feel any difference yetHas tried this for two weeks, can’t feel any difference yet. It’s absorbed really quick, but I personally preferred the Aspect VC’s texture.
Serum/OilI love this serum and use it daily before bed. It has a beautiful natural/herbal/orange scent to it. Very light weight feeling to it. I would say its a little bit of a mix of a serum and an oil together. Barely notice it on my skin once applied because it soaks in straight away. It is expensive so I try to only use it once a week on my entire face and only on my problem areas every other day. My s...Read More
Light serum/oilIts very light weight. Almost a mix between a serum and an oil consistency. Has a very herbal orange scent to it but not overpowering. I apply it very quickly as it soaks in extremely quick - I would suggest dropping directly onto the face instead of into hands first. My skin feels noticeably good the next morning after using.
Lovely light serumFirst off I absolutely love the smell of this product! It is a super light oil/serum, I have oily prone skin but this does not feel heavy on my skin at all. After my morning cleanse 4 -6 drops is enough to spread over my face neck and decolletage. During the summer months my pigmentation on my face always gets darker but since using this paired with the medik8 sunscreen my pigmentation is barely v...Read More
Expensive but worksI first received this as a sample a few months ago and loved it straight away - my face felt so nice the day after using. Also love that it has a very natural herbal scent to it. It seems like more of an oil than a serum but doesn't weight down the skin. Very light weight. I have since purchased a full size bottle.
Less is more!Less is more with this serum - I thought the more I put on my face the better it would work AND my skin started peeling the next morning from a vitamin C overdose!
Lovely serumI originally received this as a sample with an order and immediately purchased the full size. Its a little pricey but is so worth it. The consistency is a mix between oil and serum but doesn't make the skin feel weighed down. Really noticed a difference after using it for a few weeks at night.
Wish it was cheaper! AmazingI really loved this product so much (Received as a 7 day sample) it was the perfect combination of a serum and a oil. Left my skin feeling smooth and hydrated without being oily. Would be a great bed time serum. Scent was a really lovely herbal natural smell. I wish it was a little cheaper because I would be on to it!!
Good product!I have dry skin with freckles and this product really helps to brighten my skin and i find myself having soft skin with a glow.
Lovely Serum/oilThe consistency is almost a mix of a serum and a light oil together. Felt lovely to apply to the skin. Was light and didn't make my skin feel oily.
Great productI have noticed an immense change in my skin since using this daily. After cleansing in the morning I massage into my face and neck and allow to sink in before applying sunscreen and then my makeup. The smell is divine and it feels really light on my skin. I will definitely repurchase when I finish this bottle.
Reccomend!I was reccomend this product for my mum as use between her derma roller for aging and acne. My mum was very happy with this product and has received compliments on her skin.
Best day serum - EVER!This serum is perfect for my sensitive skin - it feels amazing, smells so nice and leaves my skin looking hydrated, bright and healthy. It feels luxurious and healthy.
It takes a little to absorb into the skin (obviously) so you need to give it a couple of minutes before proceeding to your next product / makeup. It's so worthy though!
Definitely recommend and will contin...Read More
Worth the high priceI got this as a sample & after using it daily for around 3 weeks I cannot live without it. My face feels so soft & skin seems a bit plumper. When I’d almost runout I wasn’t sure I wanted to buy the full size but decided to just do it. I do not regret this decision at all. I know it’s $$$ but given you only use 4 drops daily, this will last ages. Plus my skin has not looked or felt this glowy in fo...Read More
Great but a tad too expensiveIf it wasn't for the price I would give this product a 5 star. I received it as a sample and firstly it smells really lovely its very subtle and enjoyable natural smell. The consistency is almost a mix of an oil and a serum together its really nice on the face and doesn't feel like it weighing down or too oily. My skin honestly felt really nice the next day and extremely hydrated.
Impressed!!Received a large sample with an adore order and I am very impressed - considering purchasing the full size!! It smells lovely and zesty but not at all overpowering. Glides onto skin so beautifully, skins in quickly and leaves skin soft and hydrated. Brightening effect after a few days. Worth the price tag for the beautiful texture alone!!
HydratingSuch a hydrating serum. Smells great and applies easily. Quite expensive though.
LovelyThis came as a sample with my last order and I was really impressed with it. Smells really subtle and goes on the skin really nicely. I noticed after I applied it that my skin almost instantly felt hydrated and the next day I woke up with silky smooth skin. Not sure I could personally justify the price to purchase a full size but would definitely recommend for anyone else who can!
Fabulous Serum!I received this recently as a gift with purchase and I have never tried this brand before but i'm so glad I have discovered it! My skin is very dry and has been looking very dull until I found this! The serum is light weight and you can easily layer other products on top. Has brightened my skin and I really enjoy the smell.
Really goodI have been suffering from terribly dry skin for the last few months and I have tried expensive products and cheap ones too to find a solution and then I gave this stuff a go and its truly amazing. This is the first time Ive left a review but its because I found for my skin it did wonders.
My skin had dry patches and no amount of water drinking facials and ultra hydrating creams & exf...Read More
Great for skin texture!I have been using product for 6 months only in the morning under sunscreen and the texture and hydration of my skin has improved greatly. highly recommend. also bottle lasts months!
Beautiful productI received a 3ml bottle as a sample gift of this and loved it. The smell is divine and it applies beautifully to the skin. After applying my skin looks and feels plump and soft.
Not sure id pay full price for it as I can't see any drastic, long-term changes to my skin since using it for quite a few weeks now, but if I could justify the price in my budget I would as it is a beautiful ...Read More
Super HydratingSuch a hydrating serum. Smells really nice and comes with a dropper to apply easily. The day after my first use my skin felt really plump and hydrated. The texture is kind of like an oil and serum in one.
Lovely serumI received a sample of this serum and it felt really nice on the skin. The smell was also lovely. It was kind of like a serum/oil consistency so very hydrating and the next day my skin felt really moisturized. Not sure I personally would spend $80 on a bottle of it but it was worth it for anyone who would.
Absolutely in loveI love all of the medik8 skincare products, this serum feels luscious on the skin and has improved the appearance of my skin. I also use other medik8 products alongside the vitamin C serum.
Great SerumI recently received a sample of this and it feels really nice on the skin. Smells really nice too (Not too strong). My skin felt really hydrated afterwards. Not sure I would pay $78 for it but definitely would recommend to anyone who would!
Good For BrighteningI really like this product for its brightening capabilities.
I have used it in my routine for about a year now and its definitely made a difference.
Beautiful productI received Medik8's C-Tetra serum as a free gift and I'm so happy with this product! I'd never considered using a product like this on my skin but it's been such a great addition to my skincare routine. Love the smell and it feels amazing on my face.
Soft and hydrated skinLeft my skin feeling really hydrated and silky. Would definitely purchase.
Great for pigmentation and dehydrated skinI got this as a sample and am going to be buying this as soon as it runs out. In a few days I noticed a change in my skin. Acne scaring faded, plumper and hydrated looking skin and a radiance I haven’t had from any other serum!
Love this SerumI received a bottle of this as a sample and its really hydrating!