Can’t live without
Soooo moisturising and locks it in all day & night. I use this both in the am & pm. Lightweight enough where you can apply a full face of make up on without you...
Medik8 C-Tetra Lipid Vitamin C Antioxidant Serum 30ml SIZE: 30ml 4.4 of 206 reviews
SIZE: 30ml
4.4 of 206 reviews
Official Stockist
$86.00
4 installments of $21.50
Own it from $10/week
Most Helpful Positive
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
- Artificial Fragrance Free
- Vegan
- Alcohol Free
- Paraben Free
- Cosmeceuticals
What customers say
Age:
- 20s
- 30s
- 40s
- 50+
Skin Concern:
- Dull, dry or dehydrated skin
- Pigmentation, uneven skin tone
Skin Type:
- Dry
- Normal to dry
Frequently bought with
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Medik8 C-Tetra Lipid Vitamin C Antioxidant Serum 30ml
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Medik8 C-Tetra Lipid Vitamin C Antioxidant Serum 30ml Reviews
4.4 of 206 reviews
89% recommend this product
Most Helpful Criticism
No improvement in skin
Wanted 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 h...
Can’t live without
Soooo moisturising and locks it in all day & night. I use this both in the am & pm. Lightweight enough where you can apply a full face of make up on without you looking oily at all. It’s lasted me months! Like most Medik8 products, a little goes a long way. Such a great price for how long it lasts. Highly recommend.Nothing special
Not impressed with the serum. It’s very runny and I needed to get used to applying it, otherwise it would be all over my clothes. Did not notice promised glowing effect too :/ it smells nice though.Perfect for dry skin
Great oil I got a sample of this and I was Instantly sold I use it at night and wake up with hydrated dewy skin perfectA little bit goes a long way
Feels velvety smooth going on but takes a few minutes to absorb. Layers well under makeup. For the price I don’t feel like it has as much impact as I would expectBeautiful product
I have very sensitive skin and find some vitamin c’s irritate my skin this is one of the few that don’t cause me irritation and it’s oil based so it also doesn’t dry it out! love love love this product!Good serum
Smells citrus and feels silky on the skin, not too oily and sinks into the skin in like 2 mins. Gradually brightens the skinEveryone else noticed
I started using this product after trialing a mini size , I enjoyed using it and it felt nice but didn’t realise exactly how lovely it was making my skin! My mum, girl friends and parter all mentioned my skin after I started using it. I’ve repurchased this twice and will continue to use itGood
Good serum for uneven skin but needs to be followed up with a thick moisturiser for dry skin.My first Vitamin C serum!
I noticed my skin looked a little more awake and bright after about a month of using it. I thought that since I have oily skin I wouldn't like the oil texture, but its actually really pleasant! It feels silky on the skin and its easy enough to apply a moisturiser and SPF on top after waiting a few mins for it to sink in. I will buy this again!Not Obsessed
I normally love Medik8 products, however after continued use I just don’t love this one. I noticed no real change in my skin over time, and didn’t find it to absorb very well. I do like the smell and it didn’t irritate my sensitive skin though.Lovely
Really nice serum, I love this brandMy go-to!
Been using this serum for a few years now, after my skin therapist introduced me. I have such sensitive, dry, skin and this is all-glow without any irritation.Good product
Makes my skin soft and glowy, i pair it with a moisturiser when my skin is too dry. Smells good tooA good starter VC
I love that this is a more stable form of vitamin C so less irritating on the skin. Hence why I chose it as my first Vitamin C serum. It also smells amazing! I noticed my skin was brighter straight away.All the good stuff
This packs a punch. Leaves skin less red and glows! Paired with a moisturiser this it this ultimate vitamin c to add to nighttime routinesRedness gone
When I use it consistently the redness in my face disappears and makes my skin feel so hydrated.Best Vitamin C serum ever
I keep buying this serum as the texture, feel and smell is absolutely amazing. It works wonder for my skin too. This is part of my daily morning routine and it lasts a good 6 months for me so that way it is value for money.Awesome
Brightening power and pore lines minimiser. My skin appears brighter and healthier. I am 47 and have combo oily skin and have no issues with this product whatsoever.Glowing
Has a really nice citrus smell. Goes onto the skin very nicely and soaks in. Have definitely noticed a glow after use.brighter skin
this really does brighten your skin wow I used it for around a week before i started seeing results.Sample
Received this as a sample. It is very lightweight, felt oily at first but then absorbed nicely into my skin. It did leave my skin looking brighter! Will need to keep going with this product to see definite results.Recommend
No allergic reactions. Switched over from the ordinary. I apply this in the AM with the Hydra B5 and moisturiserGentle
It is said to be a signature product for Medik8, after using it for a week, I can't say that I have seen visible differences on my skin, but in general, it is quite gentle, very light.Great
Already repurchased my second bottle.Great product
This product is a staple in my routine. Skin feels hydrated and have noticed that it helps skin with scarring from blemishes. Sits well under makeup.Fresh
I have only recently jumped onto the Medik8 bandwagon, and I love this serum. It has a fresh, subtle scent and my skin has felt so healthy since I started using it. A little of it goes a long way, and I will definitely be repurchasing it in the future!Perfect
this is perfect for everyday useLight
it's lightweight and very gentle.Great for daily use
I am at the bottom of my first bottle and already purchased my second. I have very sensitive skin and this is perfect for daily use. It's a gentle VC so patience and consistent usage is key. It's light oil base. The only time I found it a bit too much was during the warmest months so I did stop using it for a few weeks. Other than that, it's a staple in my skincare routineFade scars
I get really huge zits during the time of the month. It usually leaves a dark scar that never goes away. I have been using this product for 3 months and I noticed that my scars are starting to fade.Lightweight and non irritating
I have used this consistently for the last 3 to 4 months, it's lightweight and very gentle. I have very sensitive skin and this is perfect for everyday use. It enhances skin tone effectively. Already repurchased my second bottle.not for me
The consistency is a little too greasy or oily for me. It took my skin a long time to absorb the product. On the other hand, once applied, the serum is comfortable and it easily overlaps with the rest of my routine.Good but others out there
This is a great Vitamin C and really brightens my skin. I am fair with some red patchiness and this is nice at night. I think there are equally good vitamin C's on the market for a lower cost though (inky list)Want to love but...
As much I want to love this product, it smells delish and has lifted some of the hyperpigmentation from my cheeks, I have developed a rash on the more sensitive areas of my face i.e. upper lip and under eyes. Despite given my skin time to heal and avoiding the areas the rash has come back within a few days of trying the product again.Not suitable for my skin
I tried Medik8 C-Tetra Luxe Vitamin C sample first. It was really good. But when I used this one, it breakout my skin so won't be using it anymore. It has made me breakout really bad so wont be using it anymoreSo dewy and fresh
I have only recently jumped onto the Medik8 bandwagon, and I love this serum. It has a fresh, subtle scent and my skin has felt so healthy since I started using it. A little of it goes a long way, and I will definitely be repurchasing it in the future!Solid Serum
I like this serum, it applies nicely and feels good on the skin. I definitely think its a good starting point for anyone new to the vitamin c game. Although I need to try a stronger serum to really change my pigmentation.Like velvet!
This product not only smells amazing but they texture is Devine. It feels like velvet on my skin and gives me a beautiful glow. After just a few days my skin was significantly brighter. Would definitely purchase again, or might even try something stronger as my skin handled this well.Gentle Vitamin C
This is my third bottle of Vitamin C. It is brightening yet gentle. It never causes a reaction. Just a great stable vitamin c for your routine.Absorbs well, non-greasy
This is a nice vitamin c formula that absorbs well into skin and you can layer serums over it. I can't speak for long-term effects as I only had a small sample but I did like the product texture. I have acne and greasy skin and I didn't find that it impacted this - although I can tolerate most vitamin C serums.A bit oily
I found this a bit oily and so didn't enjoy use it as a daytime serum, particularly for oily skin. It is a good price compared to other similar vitamin C serums like skinceuticals thoughSo good
Absorbs into the skin super quick and has given my skin the most incredible glow. Scars are fading and I’m absolutely loving it! Good product!I have never tried Oil based vitamin c, even though it’s brightening my skin but it’s not great for my combination skin type
I have never tried Oil based vitamin c, even though it’s brightening my skin but it’s not great for my combination skin type, but definitely try it if you got dry skinLightweight and Lux
I had not used an oil based vitamin C before and was expecting this to make me shiny and feel like an oil slick but it didn’t! It absorbs well into the skin, smells lovely and a little goes a long way.Not the best
I agree with some of the reviews on this product. I am a huge fan of Medik8 products but unfortunately this isn't one of them. This product does not absorbs nicely and I feel like it only sits on the top of my skin. It feels really oily which is quite bizzare for Vitamin C product. I have experienced breakout after incorporating this product along with my normal skincare routine. Not a great exper...Read MoreBeautifully gentle vitamin c serum - great for reactive skins
I haven't been able to use many active products regularly as my skin tends to be quite reactive and I will break out after sustained use of a product. I've been using this serum for nearly 3 months now though, and my skin loves this c serum, which seems to be very gentle but still gives me a glow that has been commented on! I like that it is a light oil as it's just moisturising enough for me to b...Read Moregood product
I like this vitamin C. Initially, I wasn't a fan because it's an oil but once I worked out how to apply it correctly, I enjoyed it and it doesn't leave my looking oily, only glowyI love this product
I use this every day under my SPF, it is a must-have in my skincare routine and can see I will be using this for a very long time. I originally received a sample and bought the full size when it ran out. It gives my skin a glowy radiant finish which I love. It also has a very pleasant orange scent.Maybe it's just me, but this ruined my skin
I initially LOVED this serum, the effect, the scent, everything. My skin was beginning to look brighter and I was loving it, but then, I suddenly broke out all over my face, especially on my forehead. I'd heard "purging" was normal and continued using it but it only made things worse.
I stopped using it to see if it was definitely this serum causing it, and just followed a basic ski...Read Morewonderful vc product in my morning routine
NOW it becomes my fav vc product in my morning routine. Though it does give skin oily feelings, but the feelings will disappear 5-6 mins later. I also agree with one of the comments above, in which whenever using it, the product drops from pipette and its a kind of waste. But overall, i love it, it helps reduce my pigmentations and will definitely repurchase it in the future.oily feeling
I like the citrus smell but it leaves oily feeling on my skin. When you try to apply, the product is dropping from the pipette, so I had a bit of product waste, which is a biggest turn off. Overall is good. Probably too early to expect noticeable improvement in the skin.Good product
I used it as a substitute for SkinCeuticals, but it proved to be thinner than SkinCeuticals CE for the summer. Although I prefer SkinCeuticalsr in terms of feel, its quality justifies its price, and I will continue to try other products of this brand.A good product
I’ve been using this vitamin C serum for 5 months every AM before my other serums and sunscreen. The smell is really pleasant, the product is a light thin oil-like texture that glides along my face easily, although it takes some time to absorb completely. I can’t say that I’ve noticed any improvements w/ my skin. Once I finish this bottle I won’t be repurchasing. I do find you get a lot of product...Read MoreThe Penultimate C-Serum
My skin has been getting increasingly dryer and more lined as I enter my 60th year. I’ve just started using the C- TERRA & it’s a stand out serum. I’ve tried C Serums from all price ranges and haven’t experienced any noticeable improvement. Until now. I go to sleep with the softest, plumpest skin that I don’t even need to overlay with a moisturiser, to waking up with skin that still feels moist an...Read MoreThis is a really good product
Very good product. Not too funny, not too thick. An excellent serum that includes important vitamin C.Good C
What I like about this product is the smell, it definitely smells better than my Skinceuticals C+E ferulic serum however the dispenser is a bit wider than the c+e serum and it causes the product to drip when you're not intending to dispense it so I have had it just drop on my bathroom bench and although this isn't the most expensive product it gets quite annoying over time. Also I find the serum s...Read MoreDisappointed
I purchased this Vitamin C serum because I wanted a cheaper alternative to my usual Skinceuticals one. I have just started using it and I was quite disappointed. I was surprised that it was quite oily- not the consistency that I expect from a vitamin C serum. It is quite difficult to absorb, leaving my skin looking quite greasy. I was also surprised that this does not have any tingling sensation l...Read MoreBrightens
My skin has been so much brighter plumper after using this products. Really stimulates my skin!Couldn’t live without this product!
I have been using medik8 vitamin c for about a year now and I cannot speak highly enough of this product. I use it each and every morning and it’s adds a lovely glow to my skin. I really notice the different to my skin if I miss a day!Gorgeous C
I bought this after using the Alpha-H vitamin c, which I wasn't happy with due to the water-y consistency and that it's cut with grapseed oil! Grapeseed oil has no place in my active skincare...this is a delight to use, great consistency, and absorbs really quickly, which is what you what from an AM serum.Gorgeous C
I bought this after using the Alpha-H vitamin c, which I wasn't happy with due to the water-y consistency and that it's cut with grapseed oil! Grapeseed oil has no place in my active skincare...this is a delight to use, great consistency, and absorbs really quickly, which is what you what from an AM serum.glowy skin
I really enjoyed this product, although I did break out when I started using it. However, the blackheads calmed down and my skin was really glowy. Product lasts ages!Super Gentle C
My first VitC serum amd it does not disappoint. No irritation, light sheen that absorbs quickly. Layers beautifully.Lightweight
I loved this serum so much as it is so lightweight on the skin and definitely gives glow after few days of use. Its working for my pigmentation.Lovely
This is a lovely product and such a good price point. The previous Vit C I was using was $199 and I have recently introduced a couple more serums into my routine so wanted to see if I could get something at a better price point. This has not disappointed. It feels lovely on my skin and sinks in beautifully. Very happy, will purchase again.Great Vitamin C
This was my first time trying any Vitamin C and i was really surprised! It's a great lightweight serum and has become a staple in my morning routine. It's not oily or greasy and really absorbs into the skin nicely, I've noticed a reduction in my hormonal acne pigmentation as well, which is great! Definitely recommend this serum!best brand ever
Medik8 is such a good brand and this product do the honour. Beautiful serum, with visible results. love itSuper Hydrating
I am not a big fan of using Vitamin C as it can feel sticky or look shiny on my skin. However I can amke an exception for Medik 8. Recently after switching Retinols I found days I would have really dry and flakey skin. After 2 days of using this Vitamin C my skin was as good as new! Couldn't recommend more. My skin looks so plump and refreshed after using Medik 8 products. Was recommended/introduc...Read MoreGreat addition to my skincare routine
I use this in the AM as part of my routine. I absolutely love it (and all of the Medik8 products). My skin has improved so much since using Medik8Glow
I received this as a sample and fell in love! Ive purchased since and about to re-purchase. I had never used a vitamin C serum before this. At first was a bit sceptical with the consistency as its more of an oil however its perfect! Leaves your skin feeling healthy, nourished and glowy. It also smells amazing! I get compliments every time i have this on. Must have!Bang for buck!
I heard from someone on instagram that you should invest in a good vitamin C in your 20's. I'm 23 and you bet that's what I'll be doing (...easily influenced) I really love how good this is for it's price. My only fault is it's such a thin oil and I sometimes drop some getting it from my bottle to my face. Just have to be extra careful!The nicest vitamin c
I got this as a sample from adore, I have only been using cheaper vitamin c’s but this one is for sure worth the price. I will be buying this, feels a little oily at first but then absorbs right in, layers well with sunscreen and doesn’t pillLOVE
Finally a Vitamin C that doesn't smell bad/weird and isn't sticky!! This is such a lovely dry oil texture with a very subtle citrus scent. I was worried it would cause me to break out but it hasn't. It is a bit pricey but I think it will last a very long time, also the bottle it comes in is designed to prevent it from going off I believe, which is nice when you're spending that much.
Overal...Read MoreLOVE
Finally a Vitamin C that doesn't smell bad/weird and isn't sticky!! This is such a lovely dry oil texture with a very subtle citrus scent. I was worried it would cause me to break out but it hasn't. It is a bit pricey but I think it will last a very long time, also the bottle it comes in is designed to prevent it from going off I believe, which is nice when you're spending that much.
Overal...Read MoreNice serum
I won this serum in a competition and have it applied after my medik8 peels. It definitely makes my skin glowier post-peel, however my only hesitation is that due to my oily skin and sometimes inflamed skin I don't use it very often. Overall I would recommend it, but would caution people with oily skin to not over do it!Brighter skin
I love Medik8 formulas as the deliver results and this product does not disappoint. I felt my skin got brighter with each use not to mention the antioxidant benefits it provides. I still prefer the intense version for quicker results on persistent pigmentation but this is certainly not bad for almost half the price!Wow this is lovely
This serum has really changed my skin and made it brighter and more plump. It smells so lovely and I look forward to putting it on every morning! Skin is glowing and moisturised ready for makeup or just moisturiserHow did I survive without this?
My friend reccommended adding vit C to my daily skin care and I am so glad I did, and with this product! Leaves my skin feeling so smooth and plump daily and even had a slight citrus smell which isn’t over powering and doesn’t bother me at all. Will definitely purchase againgood starter vit c
one of the product specialist at Adore Beauty suggested this vitamin C serum to me and i am quite happy with it. have not seen visible results yet (have been using it for a week now). but it is very light weight and super absorbent. i have dry skin.Must have
I was recommended this product by a friend and haven’t looked back since. It’s an oil based product but it soaks into your skin quite quickly. Although it’s pricey, a little goes a long way. I apply 4 drops on my skin and that’s enough for my whole face and décolletage. Every morning I apply buffet + peptides, this VIT c serum and sunscreen and off I go, ready to take on the day. My skin has never...Read MoreEffective
I have used lots of Vitamin C serums and I really like this one, but if you're in a rush in the morning, this one may not be for you - it is in a facial oil and it takes some time to sink in. I might use this in winter when my skin needs that added moisture, but not in summer when I feel it made my skin too "slippy".Absorbs quickly into skin and leaves a lovely glow
Everything from this brand is just lovely. This is a great Vit C. It's a good strength, that’s not too greasy. I find that it absorbs quickly into my skin and leaves a lovely glow for the day. Worn alone or under moisturiser and sunscreen - this product leaves skin fresh and plump
Nice Vitamin C Serum
It is an oil based serum, I received it as GWP. For the first time I tried this oil based vitamin C Serum, But to my surprise, it's not greasy, it brighten the skin. I am still using the Skinceuticals CF, I will consider buying full size of this C Serum in the future.Very good
Since using this serum my skin literally glows! Never seen it brighter or more even. Took 2 weeks before seeing the results.Glowy not oily
I love this oil based serum! It makes my skin feel so nourished and glowy, but sinks into the skin so it's not oily. I use the Medik8 Hydr8 B5, then this then Phytostat 9 for skin that feels bright and hydrated all day.Fav Vitamin C
This serum feels amazing on. On days where I don't go anywhere, I wash my face and just put this one and it keeps my face moisturised all day and feeling comfortable!Love this!
This was the first Vitamin C serum I started using, and I absolutely loved the smell, the texture and how it would instantly make my skin look plump, bright and reduce any redness. I ventured out and tried a few other vitamin C serums, and I've come straight back to this one. It lasts me around 5-6 months using every day on my face, neck and chest and it's never spoiled or turned colour.Great entry level vitamin c
This is a really nice vitamin c product. Never gives me any issues and does wonders for the skin!Perfect consistency
I love the consistency of this product, its so smooth feeling on the skin and best of all has no offensive smell, just a really light orange smell. I feel like it adds to hydration levels and does not sting at all. I have noticed some change in brightness after just one month of use, will continue to use and hope to see more changes. Works well under make up too- I have had no issues!Gentle Vitamin C
Smells lovely, glides onto skin easily and sinks in fairly fast. Layers well with Medik8 B5 Intense, sunscreen and make up to create a lovely glowy look. It is however, very gentle and probably more of a beginner vitamin C. I do love it, but will definitely be purchasing the more intense version once I’m done with this one as a seasoned Vit C user.Nice add to my moisturiser
Love adding a few drops of this to my face moisturiser for neck and faceI love this Vit C
This was my first time trying a Vitamin C serum. I absolutely love this product. I was concerned when I used it the first time as it is definitely quite an oily consistency, and I am an oily skin type. However, I use this with the Medik8 B5 Hydr8 in the morning and it doesn't leave my face feeling oily at all, just feel super hydrated all day. I have noticed a definite difference in brightness.First vitamin c serum
I got this as a sample with my previous order. It was my first vitamin c serum so not sure how other brands are but it felt like this cleared my skin a lot. Only downside is that it’s a bit oily but the smell is so nice.LOVE THIS PRODUCT
It goes on smoothly and really well into the skin. I use it before my moisturizer and have noticed the redness around my forehead and cheeks has also subsided. I’ve only used this product for a week and have noticed a difference in my skin so I’m hoping to see a more results as I go onBest start to the day
I use this straight after washing my face and its the perfect consistency.. It absorbs nicely into my skin and the smell is so refreshing! Loving it.More of a liquid, than a serum
This is more of a liquid than a serum, but it feels ultra luxurious on the skin and I have definitely noticed a difference. I quite like that its a liquid as it absorbs into the skin easier than if it was a heavier serum. I top it off each morning with my Daily Radiance Vitamin C cream for a double dose of Vit C.I love this Serum!
My skin was feeling like it needed something MORE. I added this into my routine and within days my skin felt supple and fresh! Really enjoy using this, smells lovely and I will continue usingLove it!!
I was sent this as a sample and now I’m so tempted to purchase it! It made my skin glowy and plump, I recommend!Good for brightening.. but quite oily
This is probably one of the 'oilest' vitamin c products that I've used, which I found quite odd. It works - I found that my skin was visibly brighter, but I don't love the consistency. I used up the product but I won't purchase another one.Solid vitamin C choice
This vitamin C serum spreads effortlessly on the skin and has a lovely smell. My skin has felt brighter and clearer after regular use of this product
