C-Tetra®

Overall rating: 4.855462 / 5 from 2380 reviews.

AI Generated Review Summary

C-Tetra® is a lightweight serum formulated with stabilized vitamin C (7%) and vitamin E, designed to brighten uneven skin tone and reduce the appearance of fine lines and wrinkles. It provides a healthy glow, absorbs quickly, and leaves the skin feeling smooth and radiant. Customers have praised its effectiveness and noticeable results in their skincare routine.

Summary topics

  • Healthy Glow (6%): It was highlighted by customers that the product gives a nice glow on the skin and leaves a healthy glow.
  • Absorption Speed (8%): Customers keep praising how well the product absorbs into the skin, describing it as quick and easy to use.
  • Effectiveness (6%): Customers loved the results, with many describing it as great, amazing, and the best they have experienced.
  • Vitamin C Content (7%): Customers raved about the vitamin C, with many describing it as the best they have ever used.
  • Skincare Impact (4%): It was reported by customers that this product has made a huge difference in their skincare routine.

Review topics: ["skin","serum","feels","smell","absorbs","vitamin c","glow","looks","texture","results","difference","buy","size","oil","use","formula","works","irritation","c-tetra","face","improvement","bottle","consistency","medik8","vit c","effect","complexion","reaction","spots","lines"].

Review highlights

  • "Perfect texture, absorption, smell and the effects are actually noticeable." — Adina S.
  • "Skin feels wonderfully smooth, looks radiant and smells wonderful" — Joke B.
  • "Very impressed with this serum so far - nice texture and scent and seeing good results." — Bailey A.

Reviews

Lovely vitamin C serum

"One of my favourite Medik8 products. It feels lovely on the skin, absorbs well and gives my complexion a fresh, healthy glow. I also like that it doesn’t feel sticky or heavy."

— Nataliia Y. (5/5)

Finally a vitamin c serum for sensitive skin!!

"This serum has done wonders for the tone and texture of my skin. My redness also visibly improved within two weeks. The deep set wrinkles on my forehead are also fading. I have tried multiple vitamin c serums all of which made my dry sensitive skin even more reactive. I love that medik8 has a product line that allows sensitive skin users to try products that contain active ingredients."

— Austin W. (5/5)

Beautiful Serum

"This is a really lovely serum to apply, it’s a very, very light oil. It doesn’t sting or dry my skin like some other Vit C serums I have tried, and I can really see a difference in the brightness of my skin, it’s glowing. I have rosacea and very sensitive skin, I have had no adverse reactions."

— Paula H. (5/5)

One of my skincare favorites

"C-Tetra has quickly become one of my favorite products from Medik8. It has a lightweight, silky texture and absorbs beautifully without feeling greasy. My skin looks brighter, fresher and more radiant when I use it regularly. I also love how comfortable it feels on my dry skin and how easily it fits into my morning routine."

— Inna K. (5/5)

Love all medik8 C products

"Love this vitamin C oil. It smells great, absorbs without leaving a sticky or oily feel. I received this as a gift with purchase and had already stocked up on my C tetra advanced serum, so I use this on my neck and décolleté. No medik8 vitamin C products will ever be wasted in this house!"

— Sonya S. (5/5)

I love this lightweight serum

"I've been using this serum for at least ten years and I love it. It isn't at all greasy and sinks into my skin within seconds, leaving it feeling smooth and silky. I've been told I have lovely skin for my age and I'm sure this serum has contributed to this."

— Stephanie T. (5/5)

Best Vitamin C

"I’ve tried many different brands of vitamin C, but Medik8 C-Tetra has become one of my favourites. My skin feels softer and smoother, and I’ve noticed it looks brighter with a lovely healthy glow. It absorbs beautifully without feeling sticky or heavy, and a little goes a long way. I’m so pleased with it that I now have my husband using it too! Definitely one I’ll keep repurchasing."

— Shermane O. (5/5)

Seeing C-Tetra work

"Using C-Tetra every morning as part of my daily routine helps to prep my face for the day ahead. The vitamin C improves the texture of my skin and I find that my wrinkles are less noticeable because of the filling effect that C-Tetra gives me. It doesn’t feel oily or heavy and is absorbed easily which is important to me because I have combination skin"

— Mark W. (5/5)

Review I’ve been using C-Tetra

"Review I’ve been using C-Tetra and I’m really impressed with it. My skin feels noticeably smoother, more hydrated and has a lovely healthy glow. It gives my skin that fresh, plump. After using it consistently, my skin just looks healthier and more radiant. Definitely one of my favourite Medik8 products and one I would happily repurchase."

— Magdalena H. (5/5)

This is a staple for me

"This has hands down been the best vitamin C treatment I have tried. It absorbs into my skin so well and I feel my overall complexion is much clearer since I started using it. I find layering too many traditional serums impacts my makeup application, so using this oil version has been a life saver. It also feels really nourishing."

— Rachel C. (5/5)

Q&A

Good day! In the morning routine I want to use C-Tetra Lipid serum and Clarity Peptides Serum. How to use correctly then or may be not mix them at all?
Hi Halyna, you can absolutely use them together in your morning routine.Apply C-Tetra Lipid serum first, then follow with Clarity Peptides Serum. Finish with your moisturiser and SPF. That order will give you the best absorption and results
Hi there, can you use the C-Tetra with the Hyrd8 B5? If so, which should go on first? Thanks.
Hi Emma, thank you for your question! Yes, you can absolutely apply the Hydr8 B5 serum, before your C-Tetra serum to provide your skin with an extra boost of hydration. This layering ensures your skin stays hydrated while reaping the benefits of vitamin C. Thanks, Medik8 Team
How much C-Tetra should Ii use (I put it on in the morning after cleansing and before moisturiser)? It says the bottle should last up to 6 months but mine lasts about 6 weeks (full size) so I'm wondering if I'm using too much?
Hi Jane, thanks for your question about our C-Tetra! For best results, we recommend around 4-6 drops applied to the face, neck and decolletage (avoiding the eye area directly) and slightly less if you aren't applying to the decolletage for example. Each bottle when used as directed contains up to 200 applications. We hope this helps! Thanks, Medik8.
Для якого віку ця сироватка?
Hello, Thanks for your question. Our C-tetra serum is suitable for age 16 and up. Thanks, Medik8 Team
When do I use this when using with liquid peptides?
Hi Olivia, thanks for your question - for best results, apply Liquid Peptides before C-Tetra. Thanks, Medik8 Team