Medik8 C E-Tetra

Medik8 Authentic
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Medik8 C E-Tetra by Medik8

free shipping on all australian orders.

Medik8 C E-Tetra is a revolutionary ultra-stable vitamin C serum which helps combat sun-induced damage to the skin, trigger collagen synthesis, increase the skin’s elasticity and density as well as improve the skin’s texture and brighten the complexion.

The Medik8 C E-Tetra has been designed specifially for both men and women aged from 40 and up.

Regular vitamin C is very unstable. Many typical vitamin C products are inactive by the time they are used on the skin and, in some cases, they have become pro-oxidant and actually generate free radicals! Ground-breaking stability data on C E-Tetra guarantees real vitamin C activity and best of all, unlike L-ascorbic acid (regular vitamin C), C-Tetra will not exfoliate or irritate skin.

Medik8 C E-Tetra contains 7% Tetrahexyldecyl Ascorbate, the most potent and highly stable derivative of vitamin C available. C E-Tetra has been shown to have upto 4 times the potency L-ascorbic acid and other derivatives such as MAP (magnesium ascorbyl phosphate).

Additionally, the Medik8 C E-Tetra contains PP-2 (Polyolprepolymer-2) for enhanced penetration.

This product cannot be shipped outside of Australia 


Simmondsia Chinensis Oil, Tetrahexyldecyl Ascorbate, Cyclopentasiloxane, Cyclohexasiloxane, PPG-12/SMDI Copolymer, Tocopherol (d-Alpha)


CE-Tetra has been formulated for direct application to the face.

In the morning, after cleansing, apply 3-4 drops directly to the skin and blend evenly across the whole facial area, neck and decollete. Alternatively, place a drop on your finger and massage into the skin. Leave to absorb for 2-3 minutes.

Follow with the application of Hydr8 SPF25 or your preferred SPF hydrator/sunscreen.

Shipping & Returns

FREE EXPRESS shipping on orders over $50


FREE standard shipping within Australia!

Same day Melbourne delivery to select post codes.


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Reviews (5)
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100% the best vitamin C serum I have ever used. - 15-05-2018 by

I started using this serum a year ago and I have never looked back. I'm in my mid thirties and since I started using this product my skin has never looked so good. It's incredible ! I just received my bottle from adore beauty (thank you) after being without it for a week and I cant believe how much I missed it ! Since using this serum my skin’s texture and complexion has improved dramatically, pigmentation marks have diminished (in some cases have completely disappeared) and my skin is more plump, soft and bright. I use it every morning under my moisturiser and make sure I apply a sunscreen for ultimate protection against the Australian sun. A bottle usually lasts me about 3 months. It may seem expensive at first glance but the results are worth every penny, and lets be honest $140.00 (cost of a bottle at adore beauty) divided by approx. 90 days (3 month use, once a day) is really only $1.55 a day !! Please believe me when I tell you, if you try this product you will never look back! DO NOT HESITATE get this serum TODAY. The liquid gold of Vitamin C serums - LOVE LOVE LOVE this product :)

Love this product - 08-05-2018 by

I'm completely loving this product. My skin is quite sun damaged and I was recommended to give this a try. It seems to be giving my skin such a glow. I've had a lot of comments from people telling me how great my skin is looking.

Liquid gold - 19-02-2018 by

I use this after facials and skin needling as well as in my daily skin routine.

It makes you look Amazing! And, it smells Amazing!

I've used many vit c products before but this one is definitely my fav!

My Vit C match FOUND!! - 26-05-2017 by

I have tried that many Vitamin C products, mainly to try & target pigmentation, melasma & hormonal flare ups. These have all been in water-based & oil-based formulas, also a few different products from this site,different strengths , but they have all irritated my skin in various ways or caused break-outs to the point of frustrating & 'why bother?'.
I had used this years ago & found it to be a stellar product,but also had little knowledge of the power of Vit C at the time & wanted to try everything.

So I decided to return back to buying this & my skin has NEVER been HAPPIER!!.
I don't know if it is the type of Vit C in it or the combination with its oil base, but I love it & my skin loves it.
Housed appropriately in its glass dark bottle too I am ensured the ingredients stay stabilised.
It's the ONLY product that has worked for me for a C serum addition to skincare.
No flare-ups or breakouts, no tingling or burning sensations, pigmentation calmed, & WHAT a fantastic base primer under a moisturiser for makeup.
Apply 4 drops with the dropper, 1 drop each to forehead, cheeks & chin after cleansing & massage it in, it absorbs beautifully into my skin & I wait a few minutes before applying my regular moisturiser. Cant rate this highly enough!!

Expensive but worth it - 18-06-2013 by

This is god send product! My skin just looking fantastic and feel so supple especially on my neck ...llooking very supple and friends commented that I am looking younger each time we meet up! To die for product!!! Thinking of buying this ???? BUY IT,, you will never regret ! You will addicted to the result!!!

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