Medik8 C-Tetra Intense - 30ml
Lipid Vitamin C Antioxidant Serum Restore radiance and fight visible signs of ageing with C-Tetra. Utilising the antioxidant power of vitamin C and E, the hydrating serums brighten and smooth the complexion, while fighting free radicals to reduce visible signs of ageing. KEY BENEFITS Stimulates the production of collagen and elastin to help reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone. RESULTS Skin is left soft, glowing complexion and youthful-looking 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.Carefully crafted in a water-free formula to be 100% stable, 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.Your skin is packed full of natural antioxidants that defend against free radicals from the environment. When these environmental free radicals outweigh your skin’s antioxidants, the skin can no longer protect itself. Free radicals latch onto the defenceless skin cells, causing irreparable damage, which ultimately leads to premature ageing. C-Tetra contains Tetrahexyldecyl ascorbate, a super-stable form of vitamin C that boosts the antioxidant defence levels in the skin. Ever the multi-tasker, it also stimulates collagen production to reduce the appearance of fine lines and wrinkles, leaving the complexion plump, radiant and youthful looking.
Lipid Vitamin C Antioxidant Serum Restore radiance and fight visible signs of ageing with C-Tetra. Utilising the antioxidant power of vitamin C and E, the hydrating serums brighten and smooth the complexion, while fighting free radicals to reduce visible signs of ageing. KEY BENEFITS Stimulates the production of collagen and elastin to help reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone. RESULTS Skin is left soft, glowing complexion and youthful-looking 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.Carefully crafted in a water-free formula to be 100% stable, 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.Your skin is packed full of natural antioxidants that defend against free radicals from the environment. When these environmental free radicals outweigh your skin’s antioxidants, the skin can no longer protect itself. Free radicals latch onto the defenceless skin cells, causing irreparable damage, which ultimately leads to premature ageing. C-Tetra contains Tetrahexyldecyl ascorbate, a super-stable form of vitamin C that boosts the antioxidant defence levels in the skin. Ever the multi-tasker, it also stimulates collagen production to reduce the appearance of fine lines and wrinkles, leaving the complexion plump, radiant and youthful looking.
Lipid Vitamin C Antioxidant Serum Restore radiance and fight visible signs of ageing with C-Tetra. Utilising the antioxidant power of vitamin C and E, the hydrating serums brighten and smooth the complexion, while fighting free radicals to reduce visible signs of ageing. KEY BENEFITS Stimulates the production of collagen and elastin to help reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone. RESULTS Skin is left soft, glowing complexion and youthful-looking 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.Carefully crafted in a water-free formula to be 100% stable, 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.Your skin is packed full of natural antioxidants that defend against free radicals from the environment. When these environmental free radicals outweigh your skin’s antioxidants, the skin can no longer protect itself. Free radicals latch onto the defenceless skin cells, causing irreparable damage, which ultimately leads to premature ageing. C-Tetra contains Tetrahexyldecyl ascorbate, a super-stable form of vitamin C that boosts the antioxidant defence levels in the skin. Ever the multi-tasker, it also stimulates collagen production to reduce the appearance of fine lines and wrinkles, leaving the complexion plump, radiant and youthful looking.
Lipid Vitamin C Antioxidant Serum Restore radiance and fight visible signs of ageing with C-Tetra. Utilising the antioxidant power of vitamin C and E, the hydrating serums brighten and smooth the complexion, while fighting free radicals to reduce visible signs of ageing. KEY BENEFITS Stimulates the production of collagen and elastin to help reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone. RESULTS Skin is left soft, glowing complexion and youthful-looking 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.Carefully crafted in a water-free formula to be 100% stable, 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.Your skin is packed full of natural antioxidants that defend against free radicals from the environment. When these environmental free radicals outweigh your skin’s antioxidants, the skin can no longer protect itself. Free radicals latch onto the defenceless skin cells, causing irreparable damage, which ultimately leads to premature ageing. C-Tetra contains Tetrahexyldecyl ascorbate, a super-stable form of vitamin C that boosts the antioxidant defence levels in the skin. Ever the multi-tasker, it also stimulates collagen production to reduce the appearance of fine lines and wrinkles, leaving the complexion plump, radiant and youthful looking.
in 3 offers
The lowest price for Medik8 C-Tetra Intense - 30ml right now is $119.00 at Time Out Beauty, compared across 3 retailers.
The all-time low was $85.40 on 9 July 2025 — today's price is 39% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 29 June 2026.
Last updated at 29/06/2026 07:40:35
Medik8 C-Tetra + Intense 30ml
Free delivery between 1–6 July
Medik8 C-Tetra + Intense
Free delivery
Medik8 C-TETRA LUXE Serum
Delivery $10
originally posted on beautyaffairs.com.au
I've shopped at Beauty Affairs for a few years now without a problem, however last week my package was stolen- at the fault of the courier. I purchased around $200+ of skincare and was completely devastated when it happened, as I didn't think I would be able to get it resent or refunded because it wasn't Beauty Affair’s fault. I contacted them and to my surprise, they immediately offered to resend or refund my purchase, not only that but they included a gift! I have never had such exceptional customer service from any other company in my whole life! Knowing they are a relatively small (compared to Sephora etc) Australian owned brand makes it even more impressive and I'm so happy (even excited) to know my money is going to a company that highly values its customers. ... MoreI've shopped at Beauty Affairs for a few years now without a problem, however last week my package was stolen- at the fault of the courier. I purchased around $200+ of skincare and was completely devastated when it happened, as I didn't think I would be able to get it resent or refunded because it wasn't Beauty Affair’s fault. I contacted them and to my surprise, they immediately offered to resend or refund my purchase, not only that but they included a gift! I have never had such exceptional customer service from any other company in my whole life! Knowing they are a relatively small (compared to Sephora etc) Australian owned brand makes it even more impressive and I'm so happy (even excited) to know my money is going to a company that highly values its customers. I would encourage EVERYONE to shop here. Side note: they are also very budget inclusive with the range of products they carry which is always lovely. Thank you Beauty Affairs!!!!
originally posted on medik8.com
I use this after my oxy-peptides serum has dried, morning and evening. I am sincere in saying that both are considerably lightening my sun damage hyperpigmentation patches. I appreciate that at 61 years of age, these patches won’t disappear forever but… they sure are fading and on the whole, my face and neck skin looks and feels brighter, silky, dewy and radiant…immensely happy with the fabulous advice always given so swiftly and graciously too. These products are faultless and, particularly for sun damage too! I’m forever grateful x
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.
| dimensions | ‎3.6 x 5.1 x 11.5 cm; 86 Grams |
Medik8 C-Tetra + Intense 30ml
Free delivery between 1–6 July
Medik8 C-Tetra + Intense
Free delivery
Medik8 C-TETRA LUXE Serum
Delivery $10
I've shopped at Beauty Affairs for a few years now without a problem, however last week my package was stolen- at the fault of the courier. I purchased around $200+ of skincare and was completely devastated when it happened, as I didn't think I would be able to get it resent or refunded because it wasn't Beauty Affair’s fault. I contacted them and to my surprise, they immediately offered to resend or refund my purchase, not only that but they included a gift! I have never had such exceptional customer service from any other company in my whole life! Knowing they are a relatively small (compared to Sephora etc) Australian owned brand makes it even more impressive and I'm so happy (even excited) to know my money is going to a company that highly values its customers. ... MoreI've shopped at Beauty Affairs for a few years now without a problem, however last week my package was stolen- at the fault of the courier. I purchased around $200+ of skincare and was completely devastated when it happened, as I didn't think I would be able to get it resent or refunded because it wasn't Beauty Affair’s fault. I contacted them and to my surprise, they immediately offered to resend or refund my purchase, not only that but they included a gift! I have never had such exceptional customer service from any other company in my whole life! Knowing they are a relatively small (compared to Sephora etc) Australian owned brand makes it even more impressive and I'm so happy (even excited) to know my money is going to a company that highly values its customers. I would encourage EVERYONE to shop here. Side note: they are also very budget inclusive with the range of products they carry which is always lovely. Thank you Beauty Affairs!!!!
I use this after my oxy-peptides serum has dried, morning and evening. I am sincere in saying that both are considerably lightening my sun damage hyperpigmentation patches. I appreciate that at 61 years of age, these patches won’t disappear forever but… they sure are fading and on the whole, my face and neck skin looks and feels brighter, silky, dewy and radiant…immensely happy with the fabulous advice always given so swiftly and graciously too. These products are faultless and, particularly for sun damage too! I’m forever grateful x
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 have been using this vitamin C serum for a few weeks and I like it! It has an oily consistency when you apply it, but it absorbs quickly into the skin without leaving any sticky residue. It also has a nice texture that feels smooth and silky on the skin. It gives the skin an overall radiance that makes me look more refreshed and glowing. If you want to treat hyperpigmentation, this product might not be the best choice, but it will protect your skin from further or more severe damage.
I started off with the travel size, I was a little cautious as I have sensitive skin and I was a bit sceptical as to whether it would suit. I loved it and upgraded to full size. Easy to apply, no waste and brings a lovely glow to my skin on application. Any second stage moisturiser/SPF goes on easy over it with no piling, just give it a few moments to settle in. Definite improvement in some mild sun damage by the sides of my face. But…I do heed the advice. I am definitely more sensitive to any sun exposure (I also use Crystal Retinal 6). Its’s worth every bit of effort to protect, because the radiance that this product has generated for my skin is amazing.
I love Medik8's products, so when I was looking for a new Vitamin C serum, I grabbed this with high hopes. Sadly, it has not worked out for me. My skin is super oily and as a result, it feels like this serum just sits on top of my skin. It takes quite a bit of time and massaging/patting for it to finally "sink in". I have also not noticed much of a difference in my skin since adding this to my routine and I do have some hyperpigmentation I was hoping to see improvements with. Not sure if this is due to the lack of absorption. This product is marked "All Skin Types", but if you have oily skin I would avoid it.
I’ve been using this for 21 days straight and I’m not seeing a difference. Not right after I put it on and not daily. Maybe it’s subtle? I love the smell, and how quickly it absorbs. I’m just not noticing anything. My face doesn’t seem brighter from this product alone.I have various other products (I don’t use them with this one) that I notice a difference immediate (a vit c mask) or over a period of time (UB pineapple peptide cream). But this? I don’t know. I know to give my face time, maybe even months, and I will. If I can I’ll update my review then.
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.
I have classic C-Tetra in full size as my every day solution, but I was tempted to get mini bottle for any travels. Well.. After new year weekend when I was not home and took C-Tetra luxe with me I just couldn't stop myself and finished it ah home.. 😅 It smells amazing, it's lite and not greasy. My hypersensitive thin skin, prone to redness and also acne( in the past but as I stopped taking birth-control I was told it could be back) was happy with it. Like REALLY. I do have EhDS and my skin is really really fragile and reactive, also any scars are even more thin.. But I don't feel any discomfort or visual defects, only softness, glowing and moisturizer experience.
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!
| dimensions | ‎3.6 x 5.1 x 11.5 cm; 86 Grams |
