Medik8 Serum C Tetra Vitamin C 30 ml
Restore radiance and fight visible signs of ageing with C-Tetra, a super-light daily vitamin C serum. Antioxidant power is provided through vitamin C and E. Together, these actives help to combat sun and pollution-induced damage. The lightweight, uplifting formula helps reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone. Using a lipid-soluble form of vitamin C called tetrahexyldecyl ascorbate, the formula penetrates deep into skin to provide powerful antioxidant protection with minimal irritation. C-Tetra has been carefully crafted in a water-free formula to be 100% stable, which means that the vitamin C does not degrade over time. This ensures that your formula remains highly potent from the very first use to the final drop. Formulated with nourishing, pampering oils combined with the anti-ageing power of vitamin C, this fast-absorbing vitamin C serum is ideal for those looking for skin rejuvenation. Perfect for those who are new to vitamin C, or are looking to upgrade from C-Tetra Cream or Daily Radiance Vitamin C.
Restore radiance and fight visible signs of ageing with C-Tetra, a super-light daily vitamin C serum. Antioxidant power is provided through vitamin C and E. Together, these actives help to combat sun and pollution-induced damage. The lightweight, uplifting formula helps reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone. Using a lipid-soluble form of vitamin C called tetrahexyldecyl ascorbate, the formula penetrates deep into skin to provide powerful antioxidant protection with minimal irritation. C-Tetra has been carefully crafted in a water-free formula to be 100% stable, which means that the vitamin C does not degrade over time. This ensures that your formula remains highly potent from the very first use to the final drop. Formulated with nourishing, pampering oils combined with the anti-ageing power of vitamin C, this fast-absorbing vitamin C serum is ideal for those looking for skin rejuvenation. Perfect for those who are new to vitamin C, or are looking to upgrade from C-Tetra Cream or Daily Radiance Vitamin C.
Restore radiance and fight visible signs of ageing with C-Tetra, a super-light daily vitamin C serum. Antioxidant power is provided through vitamin C and E. Together, these actives help to combat sun and pollution-induced damage. The lightweight, uplifting formula helps reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone. Using a lipid-soluble form of vitamin C called tetrahexyldecyl ascorbate, the formula penetrates deep into skin to provide powerful antioxidant protection with minimal irritation. C-Tetra has been carefully crafted in a water-free formula to be 100% stable, which means that the vitamin C does not degrade over time. This ensures that your formula remains highly potent from the very first use to the final drop. Formulated with nourishing, pampering oils combined with the anti-ageing power of vitamin C, this fast-absorbing vitamin C serum is ideal for those looking for skin rejuvenation. Perfect for those who are new to vitamin C, or are looking to upgrade from C-Tetra Cream or Daily Radiance Vitamin C.
Restore radiance and fight visible signs of ageing with C-Tetra, a super-light daily vitamin C serum. Antioxidant power is provided through vitamin C and E. Together, these actives help to combat sun and pollution-induced damage. The lightweight, uplifting formula helps reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone. Using a lipid-soluble form of vitamin C called tetrahexyldecyl ascorbate, the formula penetrates deep into skin to provide powerful antioxidant protection with minimal irritation. C-Tetra has been carefully crafted in a water-free formula to be 100% stable, which means that the vitamin C does not degrade over time. This ensures that your formula remains highly potent from the very first use to the final drop. Formulated with nourishing, pampering oils combined with the anti-ageing power of vitamin C, this fast-absorbing vitamin C serum is ideal for those looking for skin rejuvenation. Perfect for those who are new to vitamin C, or are looking to upgrade from C-Tetra Cream or Daily Radiance Vitamin C.
in 33 offers
The lowest price for Medik8 Serum C Tetra Vitamin C 30 ml right now is $60.20 at Atone Skin Clinic, compared across 33 retailers.
The all-time low was $21.00 on 18 Mar 2026 — today's price is 187% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 8 June 2026.
Last updated at 08/06/2026 13:37:20
Medik8 C-Tetra - Lipid Vitamin C Radiance Serum | Atone Skin
Delivery $14.55
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originally posted on beautyaffairs.com.au
But really I wanted to come here and give thanks and my 5 stars to Beauty Affairs! In this current climate (covid) it’s been tough.... I’m a mum of three with a small baby and a child with special needs who as anyone in NSW would know r home doing school.... shops aren’t open anyway and I have been in real need of a “glow up” Beauty Affairs helped me! How? First off, they have great customer service! They’re very friendly and get back to you straight away (given it is within working hours) the pack it and send it and I honestly receive it the next morning! To me those are two of the most important things! I can’t go out I don’t have time to do anything... I appreciate anyone who can get me my stuff quick and who actually get back to you! I Love little freebies you ... MoreBut really I wanted to come here and give thanks and my 5 stars to Beauty Affairs! In this current climate (covid) it’s been tough.... I’m a mum of three with a small baby and a child with special needs who as anyone in NSW would know r home doing school.... shops aren’t open anyway and I have been in real need of a “glow up” Beauty Affairs helped me! How? First off, they have great customer service! They’re very friendly and get back to you straight away (given it is within working hours) the pack it and send it and I honestly receive it the next morning! To me those are two of the most important things! I can’t go out I don’t have time to do anything... I appreciate anyone who can get me my stuff quick and who actually get back to you! I Love little freebies you guys throw in !
originally posted on Cult Beauty
I absolutely adore this serum, it is the most beautiful consistency and feels so light on the skin. I’m not a huge fan of the heavier, sticky serum textures and this is perfectly light but not greasy, and it smells really, really beautiful. I actually look forward to using it! My skin is definitely brighter and more radiant after I’ve used it and I love knowing it is giving me added antioxidant protection, during the day. I will definitely repurchase this as I think the extra price point is totally worth it, my skin feels softer and definitely glows more.
originally posted on skinmart.com.au
I am a dermatologist and am looking into new products to stock and sell in my clinic, I have recently purchased C-Tetra and am currently using in as a serum, 1 application daily in the morning underneath my day cream and sunscreen.Medik 8 is well know for delivering products with a strong pipe line of well calculated actives.Though this brand is a high end skin care brand they do use the money your paying for to deliver a high standard of dermatological active ingredients as to wasting money on beautiful packaging like other high end brands like la prairie.C-Tetra is a very well delivered, formulated, well tolerated vitiman C serum.Many people, especially younger patients of mine do not want to use any products that may bring about the reality that they are ... MoreI am a dermatologist and am looking into new products to stock and sell in my clinic, I have recently purchased C-Tetra and am currently using in as a serum, 1 application daily in the morning underneath my day cream and sunscreen.Medik 8 is well know for delivering products with a strong pipe line of well calculated actives.Though this brand is a high end skin care brand they do use the money your paying for to deliver a high standard of dermatological active ingredients as to wasting money on beautiful packaging like other high end brands like la prairie.C-Tetra is a very well delivered, formulated, well tolerated vitiman C serum.Many people, especially younger patients of mine do not want to use any products that may bring about the reality that they are putting oil on their ski , as they thread oil to the conclusion of clogged pours and pimples.This is how ever not the case from a scientific perspective when it comes to skin care.An oil or a serum has a mechanism allowing it to be semi- permeable through the skin cells allowing for better penetration and absorption.Creams sit on the surface of the skin and are unable to penetration through the superficial layers (epidermis) of the skin resulting in a lack of ability to do their job- no matter how good the product is.C-Tetra because of its consistency allows for substantial penetration into the epidermis and dermis which inturn results in results on the inside and outside of your skin.This product is best used in the morning BEFORE the application of your day cream , then an SPF, C-Tetra and any vitiman C is a product that creates a UVA and UVB barrier so it not only helps with skin restoration, but it also helps to get the very most out of your SPF and increases it, an SPC and C-Tetra work in a sernergistic nature getting the very most out of each product.Please DO NOT MISTAKE what I have written here - under NO circumstances is C-Tetra to be used AS an SPF or sunscreen , it is to be used WITH your SPF to gain maximum coverage from your sunscreen not as a sunscreen.One of the best ways to stop the aging of skin is sun protection as the U A and UVB from the sun are the primary cause of pre mature agile for the skin.A little of the product goes a long was so though it comes not of the cheap side, it is a product that u need very little from and 1 bottle will last 3 months.No matter how old you are - 15 or 105 , C-Tetra can add a huge benefit to your daily and long term skin care routine and goals.Definitely a product that will be going on the list to stock in my practice.
| Choices | Cruelty Free |
| Choices | Artificial Fragrance Free |
| Choices | Vegan |
| Choices | Alcohol Free |
| Choices | Paraben Free |
Medik8 C-Tetra - Lipid Vitamin C Radiance Serum | Atone Skin
Delivery $14.55
Medik8 C-Tetra Vitamin C Serum, Anti-Ageing, Hydrating, Brightening, 1 oz
Free delivery
Medik8 C-Tetra Lipid Vitamin C Antioxidant Serum 30ml · Troya Beauty · Australia
Free delivery
Medik8 C-Tetra 30ml
C-Tetra 30ML $69
But really I wanted to come here and give thanks and my 5 stars to Beauty Affairs! In this current climate (covid) it’s been tough.... I’m a mum of three with a small baby and a child with special needs who as anyone in NSW would know r home doing school.... shops aren’t open anyway and I have been in real need of a “glow up” Beauty Affairs helped me! How? First off, they have great customer service! They’re very friendly and get back to you straight away (given it is within working hours) the pack it and send it and I honestly receive it the next morning! To me those are two of the most important things! I can’t go out I don’t have time to do anything... I appreciate anyone who can get me my stuff quick and who actually get back to you! I Love little freebies you ... MoreBut really I wanted to come here and give thanks and my 5 stars to Beauty Affairs! In this current climate (covid) it’s been tough.... I’m a mum of three with a small baby and a child with special needs who as anyone in NSW would know r home doing school.... shops aren’t open anyway and I have been in real need of a “glow up” Beauty Affairs helped me! How? First off, they have great customer service! They’re very friendly and get back to you straight away (given it is within working hours) the pack it and send it and I honestly receive it the next morning! To me those are two of the most important things! I can’t go out I don’t have time to do anything... I appreciate anyone who can get me my stuff quick and who actually get back to you! I Love little freebies you guys throw in !
I absolutely adore this serum, it is the most beautiful consistency and feels so light on the skin. I’m not a huge fan of the heavier, sticky serum textures and this is perfectly light but not greasy, and it smells really, really beautiful. I actually look forward to using it! My skin is definitely brighter and more radiant after I’ve used it and I love knowing it is giving me added antioxidant protection, during the day. I will definitely repurchase this as I think the extra price point is totally worth it, my skin feels softer and definitely glows more.
I am a dermatologist and am looking into new products to stock and sell in my clinic, I have recently purchased C-Tetra and am currently using in as a serum, 1 application daily in the morning underneath my day cream and sunscreen.Medik 8 is well know for delivering products with a strong pipe line of well calculated actives.Though this brand is a high end skin care brand they do use the money your paying for to deliver a high standard of dermatological active ingredients as to wasting money on beautiful packaging like other high end brands like la prairie.C-Tetra is a very well delivered, formulated, well tolerated vitiman C serum.Many people, especially younger patients of mine do not want to use any products that may bring about the reality that they are ... MoreI am a dermatologist and am looking into new products to stock and sell in my clinic, I have recently purchased C-Tetra and am currently using in as a serum, 1 application daily in the morning underneath my day cream and sunscreen.Medik 8 is well know for delivering products with a strong pipe line of well calculated actives.Though this brand is a high end skin care brand they do use the money your paying for to deliver a high standard of dermatological active ingredients as to wasting money on beautiful packaging like other high end brands like la prairie.C-Tetra is a very well delivered, formulated, well tolerated vitiman C serum.Many people, especially younger patients of mine do not want to use any products that may bring about the reality that they are putting oil on their ski , as they thread oil to the conclusion of clogged pours and pimples.This is how ever not the case from a scientific perspective when it comes to skin care.An oil or a serum has a mechanism allowing it to be semi- permeable through the skin cells allowing for better penetration and absorption.Creams sit on the surface of the skin and are unable to penetration through the superficial layers (epidermis) of the skin resulting in a lack of ability to do their job- no matter how good the product is.C-Tetra because of its consistency allows for substantial penetration into the epidermis and dermis which inturn results in results on the inside and outside of your skin.This product is best used in the morning BEFORE the application of your day cream , then an SPF, C-Tetra and any vitiman C is a product that creates a UVA and UVB barrier so it not only helps with skin restoration, but it also helps to get the very most out of your SPF and increases it, an SPC and C-Tetra work in a sernergistic nature getting the very most out of each product.Please DO NOT MISTAKE what I have written here - under NO circumstances is C-Tetra to be used AS an SPF or sunscreen , it is to be used WITH your SPF to gain maximum coverage from your sunscreen not as a sunscreen.One of the best ways to stop the aging of skin is sun protection as the U A and UVB from the sun are the primary cause of pre mature agile for the skin.A little of the product goes a long was so though it comes not of the cheap side, it is a product that u need very little from and 1 bottle will last 3 months.No matter how old you are - 15 or 105 , C-Tetra can add a huge benefit to your daily and long term skin care routine and goals.Definitely a product that will be going on the list to stock in my practice.
Finally leaving a review after finishing the entire bottle. It's lasted me 7 months. This is while using it only in the morning. I would absolutely recommend this serum. My skin has lost its dullness and now looks bright and slightly smoother. It sinks in easily and I've had no bad reaction to it. It's got a slight citrus smell to it. I've now purchased the next strength in Medik8's collection along with a few of their other products. All their products are quite pricey so I only buy them when there's an offer on. I'm sure there are cheaper vitamin C serums out there but I'd pick this everytime.
I decided to try this instead of my Drunk Elephant Vitamin C. On one side it did last me way longer than DE vitamin C, but unfortunately Im not big fan of consistency of this product. Its really oily even greasy. Yes 6 drops go a long way but it doesn’t soak into my skin. It feels like just stays on top of it instead of absorbing. And then is the smell, Im not use to strong orange smell like that, feels like Im baking a cake smells that chemical and artificial. Does it do anything to my skin? I truly don’t think so. Im committed to finishing my bottle but it comes with a struggle and I can’t wait to go back to my old DE vitaminc C.
I received this in one of the CB Goody bags, and at first was a little confused as despite it being called a serum, it's thin, oily consistency was far from the gel types I was used to using from brands like Glow Recipe, Drunken Elephant etc. I was also sceptical as to 'only' needing to use 6 drops for the whole face and neck, it didn't seem like much! However, I am so glad I got past my original reservations, and indeed that I received the product at all as it's unlikely I'd have chosen it on my own. It smells gorgeous, like sweet oranges, and you really do only need to use a little as it warms and spreads as you massage it into your skin. I found it pretty fast absorbing and it leaves your skin with a velvety texture. I have been using this for several weeks and ... MoreI received this in one of the CB Goody bags, and at first was a little confused as despite it being called a serum, it's thin, oily consistency was far from the gel types I was used to using from brands like Glow Recipe, Drunken Elephant etc. I was also sceptical as to 'only' needing to use 6 drops for the whole face and neck, it didn't seem like much! However, I am so glad I got past my original reservations, and indeed that I received the product at all as it's unlikely I'd have chosen it on my own. It smells gorgeous, like sweet oranges, and you really do only need to use a little as it warms and spreads as you massage it into your skin. I found it pretty fast absorbing and it leaves your skin with a velvety texture. I have been using this for several weeks and definitely see an improvement in the brightness of my skin, although to be honest, I do actually mix this with the same number of drops with Paula's Choice C15 Booster in the morning, and NIOD Re:Pigment in the evening, as my main skin concern is dark spots/freckles. So far it's working, although it's only been about a month, so I'm looking forward to seeing the results in a few more months!
I’ve heard good things about the brand so was excited to try this as I’m always on the hunt for a good vitamin C serum. This is a dry oil formula so it’s very runny but it sinks in to your skin really well. I love that it smells like oranges as I associate vitamin c with the fruit. It leaves the face looking hydrated and glowy, I can even skip my moisturiser in the summer because of it. I have already noticed my pigmentation fading and my whole face looking brighter and healthier. It’s also really comfortable on sensitive skin without any stinging or peeling which I love! I’m interested in buying their higher percentage version next.
I love the C-Tetra face product so decided to add this eye version to my routine. It's a nice product, smells good, consistency seems the same as the face product, but unfortunately I haven't noticed any difference to my dark circles as of yet, or any changes to my eye area in general. I'm also not a fan of the applicator (same applicator as the intelligent retinol eye) Its a small plastic spatula but its not a soft plastic, its very scratchy and does not feel nice around your delicate eye area. I would prefer a dropper like the facial c-tetra product, or a softer spatula. I will finish off the rest of the bottle, but i'm not sure I would spend money on this one again when I could just dab some of the facial c-tetra (that I love and do re-buy) around my eye area ... MoreI love the C-Tetra face product so decided to add this eye version to my routine. It's a nice product, smells good, consistency seems the same as the face product, but unfortunately I haven't noticed any difference to my dark circles as of yet, or any changes to my eye area in general. I'm also not a fan of the applicator (same applicator as the intelligent retinol eye) Its a small plastic spatula but its not a soft plastic, its very scratchy and does not feel nice around your delicate eye area. I would prefer a dropper like the facial c-tetra product, or a softer spatula. I will finish off the rest of the bottle, but i'm not sure I would spend money on this one again when I could just dab some of the facial c-tetra (that I love and do re-buy) around my eye area instead.
This is my first exposure with vitamin c.I was nervous at first with this new high end skin care. Sudden lines before my 40th birthday on my forehead made me dive in head first.I needed to know the why for vitamin C. I found a dermatologist on YouTube. She explained the different forms of vitamin c. I was pleasantly surprised that Medik8 is using a high end stable vitamin c form. 🙌After learning about the why and collagen. I'm loving this product. I love the smell too.It will take time to give a full review. At least three months for my skin to initially adapt. Cell turnover takes at least 28 days.
Im 31, and have suffered with problematic skin since i was 15. I had acne until around the age of 23 and was left with scarred, uneven, dry and dull skin. I have used MANY products to help, but none worked for me, until i came across Medik8, which has changed the game! I have been using this serum for around 3 months now, once in the morning, and my skin has become more clearer looking, glowy, hyrdated and actually looks like i've got colour back in my face! (i've even been complemented recently). It also looks as though it has evened the texture of my skin too.I went on to purchase more products, and all of them together, are a dream team.this is the day/night routine i follow! i just wanted to share as it has worked SO well for me, it may work for ... MoreIm 31, and have suffered with problematic skin since i was 15. I had acne until around the age of 23 and was left with scarred, uneven, dry and dull skin. I have used MANY products to help, but none worked for me, until i came across Medik8, which has changed the game! I have been using this serum for around 3 months now, once in the morning, and my skin has become more clearer looking, glowy, hyrdated and actually looks like i've got colour back in my face! (i've even been complemented recently). It also looks as though it has evened the texture of my skin too.I went on to purchase more products, and all of them together, are a dream team.this is the day/night routine i follow! i just wanted to share as it has worked SO well for me, it may work for others!MORNINGCleanseHyalurolic AcidC-Tetra Vitamin CAdvanced Day Total ProtectNIGHTCleanseHyalurolic AcidNiacinamideNight Ritual Vitamin AIf you haven't tried this serum, i would highly recommend you do! Its costly, but its worth every penny!
| Choices | Cruelty Free |
| Choices | Artificial Fragrance Free |
| Choices | Vegan |
| Choices | Alcohol Free |
| Choices | Paraben Free |