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Saturday, May 25, 2024

Medik8 C-Tetra Serum Evaluate – Lovely With Brains

Medik8 C-Tetra Serum review

NOTE: This serum is now referred to as Medik-8 C-Tetra and is available in a barely completely different bottle. However the system inside is similar, so every thing nonetheless applies.

Evaluate up to date on 29/04/2024.

What’s the most effective Vitamin C by-product on the market?

Yeah, yeah, ideally we should always all use pure vitamin C (L-Ascorbic Acid). However that’s irritating as hell. Unstable AF. Goes unhealthy earlier than you attain half the bottle and stings your pores and skin like loopy.

Give me a by-product, pronto!

However, which one? There are greater than a dozen lately, all promising the identical advantages as pure vitamin C with out the unintended effects. How have you learnt which one actually delivers?

Personally, I’m a fan of Tetrahexyldecyl Ascorbate, the by-product utilized in Medik8 C-Tetra Serum. Right here’s why:

What’s In Medik8 C-Tetra Serum?


Let’s be sincere: Tetrahexyldecyl Ascorbate (TA) isn’t as highly effective as L-Ascorbic Acid. Nevertheless it does two issues means higher than it:

  1. Stability: It doesn’t oxidise (i.e. go unhealthy) as shortly when uncovered to mild and air (learn: you’ll be able to really end the bottle!).
  2. Penetration: Whereas L-Ascorbic Acid solely penetrates the dermis (uppermost layers of your pores and skin), TA penetrates each the dermis and the dermis (the deeper layer under it).

TA is so good at penetrating pores and skin as a result of it’s one of many few types of vitamin C that’s oil-soluble. And that immediately catapults it to the highest of the vitamin-C-derivates-to-try checklist.

However, what the heck does it do as soon as it penetrates pores and skin? Research say it:

  1. Brightens the complexion
  2. Fights the free radicals that trigger wrinkles
  3. Increase collagen manufacturing

The catch? These research are finished through the use of both excessive concentrations of TA (20%>) or by combining decrease doses (8%>) with L-Ascorbic Acid.

Medik8 C-Tetra ONLY makes use of 7% Tetrahexyldecyl Ascorbate.

Don’t get me flawed. I’m not saying this focus is simply too low to work (I did see an enchancment, as I’ll share in a while on this evaluation).

However at this focus, that is extra of a preventative serum for ladies of their late 20s/early 30s. If you wish to fade darkish spots or scale back wrinkles, you’re nonetheless higher off with L-Ascorbic Acid.

Another factor: vitamin C works higher when used along with vitamin E and ferulic acid. This serum solely has vitamin E. Not a biggie. It’ll nonetheless do its job properly. I simply needed to say it for individuals who are in search of all 3 antioxidants of their serum.

Associated: Why You Ought to Add Vitamin C Into Your Skincare Routine

medik8 ce tetra vitamin c antioxidant serum


I do know what you’re considering: “I’ve oily pores and skin so something with oil is out of the query.”

Usually, you’d be proper. However jojoba oil is without doubt one of the exceptions to the rule. Why?

Out of all of the oils, jojoba oil resembles sebum (your pores and skin’s pure moisturiser) extra intently. This implies it’s light-weight sufficient to sink shortly into your pores and skin and never worsen pimples.

Plus – and that is excellent news for ALL pores and skin varieties – jojoba oil is wealthy in fatty acids that moisturise pores and skin and enhance its moisture content material. 

Translation: it moisturises pores and skin with out leaving a greasy, pimply mess behind.

Enjoyable reality: jojoba is pronounced “ho-ho-ba”.

Associated: What Are The Finest Facial Oils For Oily Pores and skin?


I’ll be temporary. Grapefruit peel oil is right here solely to make the serum odor citrusy (as a result of how else do you anticipate vitamin C to odor like?!).

Drawback is, its aromatic elements might irritate delicate pores and skin. There’s solely a drop of it right here, although, so it’s unlikely to be problematic for some other pores and skin sort.

I’ve been utilizing it for weeks and I didn’t expertise any irritations. Although I nonetheless desire my skincare fragrance-free, I’ve to confess I like how this serum smells. 🙂

Associated: Is Perfume In Skincare As Dangerous As Paula Begoun Says?

Struggling to place collectively a skincare routine that minimises wrinkles, prevents untimely ageing, and provides your complexion a youthful glow? Obtain your FREE “Finest Anti-Ageing Skincare Routine” to get began (it options product suggestions + proper utility order):

The Relaxation Of The Formulation & Substances

NOTE: The colors point out the effectiveness of an ingredient. It’s ILLEGAL to place poisonous and dangerous substances in skincare merchandise.

  • Inexperienced: It’s efficient, confirmed to work, and helps the product do the absolute best job to your pores and skin.
  • Yellow: There’s not a lot proof it really works (at the very least, but).
  • Pink: What is that this doing right here?!
  • Cyclopentasiloxane: A unstable silicone that creates a velvety texture that glides easily on the pores and skin – after which evaporates into skinny air.
  • Cyclohexasiloxane: One other silicones that creates comfortable, clean texture that don’t really feel greasy or sticky. It evaporates shortly after utility.
  • Tocopheryl Acetate: A type of Vitamin E that fights free radicals and helps Vitamin C last more.
  • PPG-12/SMDI Copolymer: It has fixative properties that hold energetic substances suspended and helps make pores and skin softer and smoother.
  • Limonene: A aromatic element of citrus fruits, it makes the product odor good. Nevertheless it should be listed individually on the label as a result of it’s a standard allergen.
  • Citral: One other element of grapefruit oil that smells like lemon. It too should be listed individually on the label as a result of it’s a standard allergen.
  • Linalool: It has a spicy floral scent that makes the serum good. Nevertheless it’s one other frequent allergen.
  • Geraniol: One other aromatic ingredient that smells good, however can irritate delicate pores and skin.


Light-weight texture that sinks into the pores and skin actually shortly. I swear you’d by no means say the bottom is an oil!


Technically, it’s fragrance-free. Medik8 didn’t add any separate perfume to it. Perfume can irritate pores and skin, so it’s all the time good to depart it out. However then, you might have a product that does a tremendous job at stopping wrinkles, however you don’t need to use it cos it smells like crap.

The workaround? Medik8 added grapefruit oil, a vital oil that provides the serum a subtly summery citrus scent. However, the aromatic elements that make this oil odor superb may irritate delicate pores and skin.

How To Use It

I like to make use of Vitamin C within the morning beneath sunscreen to maximise solar safety. However you may as well use it at evening earlier than moisturiser. The nearer to scrub pores and skin you apply it, the simpler it penetrates pores and skin and the higher it really works.


The brand new model is available in a darkish bottle with a dropper applicator for ease of use. Plus, it appears to be like good in your self-importance too.

Efficiency & Private Opinion

Inside every week of utilizing Medik8 C-Tetra Serum, I observed my pores and skin changing into brighter. My pores and skin has a beautiful glow that makes it look wholesome.

I can’t see that I’ve seen any discount in wonderful strains, however then this serum is preventative. You utilize it to stop wrinkles from creeping up in your face, not a lot to scale back these which can be already there.

And the science there may be strong. Nutritional vitamins C&E can destroy free radicals earlier than they depart wrinkles in your face. So I’ve no complaints right here. I do know that my pores and skin is properly protected all day lengthy.

How Does Medik8 C-Tetra Serum Examine To The Different Vitamin C Merchandise From Medik8?

Medik8 C-Tetra Serum isn’t the one Vitamin C product Medik8 makes. Right here’s a fast information to let you recognize if that is the best choice for you or if you happen to’d be higher off with one among its siblings:

  • Medik8 Each day Radiance Vitamin C™ (£59.00): A light-weight cream with Tetrahexyldecyl Ascorbate to moisturise, brighten, and battle wrinkles on the similar time. It’s finest for mixture pores and skin. Accessible at Cult Magnificence, Look Improbable, Medik8, Sephora, and SpaceNK
  • Medik8 Pure C15™ (£49.00): That is my fave serum as a result of it incorporates 15% L-Ascorbic Acid (the pure type of Vitamin C – and the simplest) and Vitamin E to stop wrinkles and brighten the complexion. It’s the simplest serum, however it could possibly irritate delicate pores and skin and goes unhealthy shortly. Accessible at Medik8.
  • Medik8 R-Retinoate® Day & Night time (£149.00): It has a retinoid ester and Tetrahexyldecyl Ascorbate (Vitamin C by-product) to stop and deal with wrinkles. It’s possibility for individuals with delicate pores and skin that may’t tolerate retinol and/or L-Ascorbic Acid (the pure type of Vitamin C). Accessible at Medik8, Sephora, and SpaceNK
  • Medik8 Tremendous C Ferulic™ (£69.00): It has 30% 3-O-Ethyl Ascorbic Acid, a by-product of Vitamin C. I haven’t seen any unbiased proof it really works higher than L-Ascorbic Acid, the pure type of Vitamin C. However if you happen to’re curious to strive it, it could possibly assist forestall wrinkles. Accessible at Medik8, Sephora, and SpaceNK
  • Medik8 C-Tetra Cream (£50.00): A hydrating cream with 7% Tetrahexyldecyl Ascorbate, Vitamin E, and hyaluronic acid. It’s finest for mixture pores and skin. Accessible at Look Improbable, Medik8, and Sephora
  • Medik8 C-Tetra Eye (£24.00): It’s the identical factor as Medik8 C-Tetra Serum, so save your self some cash and apply that on the attention space too.
  • Medik8 C-Tetra Luxe (£59.00): It’s just like Medik8 C-Tetra, but it surely has twice the quantity of Vitamin C and an oilier base. When you have dry pores and skin, that is more practical and extra moisturising for you. Accessible at Medik8, Sephora, and SpaceNK

What I Like About Medik8 C-Tetra Serum

  • Helps forestall wrinkles
  • Helps brighten pores and skin
  • Light-weight, fast-absorbing texture
  • Doesn’t go unhealthy as quick as L-Ascorbic Acid
  • Sensible packaging

What I DON’T Like About Medik8 C-Tetra Serum

  • Perfume might irritate delicate pores and skin
  • Not as efficient as 15% L-Ascorbic Acid, Vitamin E and Ferulic Acid

Who Ought to Use This?

Anybody who needs to stop untimely ageing and may’t use L-Ascorbic Acid as a result of it irritates their pores and skin.

medik8 ce tetra serum review

Does Medik8 C-Tetra Serum Dwell Up To Its Claims?

Utilising the antioxidant energy of vitamin C and E, the hydrating serum brightens and smooths the complexion, whereas preventing free radicals to scale back seen indicators of ageing.True.
The system sinks into pores and skin shortly, forsaking a comfortable and glowing complexion.True.

Value & Availability

£39.00 at Cult Magnificence, Look Improbable, Medik8, Sephora, and SpaceNK

The Verdict: Ought to You Purchase It?

Should you’re in search of a mild Vitamin C serum that doesn’t go unhealthy inside just a few weeks, this can be a good possibility to contemplate.

Dupes & Options

  • Paula’s Selection Resist Tremendous Antioxidant Serum ($43.00): Like all Paula’s Selection merchandise, this serum is loaded with antioxidants, together with two forms of Vitamin C (Tetrahexyldecyl Ascorbate + Magnesium Ascorbyl Phosphate) and the 2 buddies that supercharge its anti-aging properties, vitamin E and  ferulic acid. When you have delicate pores and skin, this is without doubt one of the finest Vitamin C serums in the marketplace to your pores and skin sort. Accessible at Dermstore and Paula’s Selection.
  • Peter Thomas Roth Potent C Energy Serum ($105.00): I do know that is costly. Nevertheless it’s value it. The serum makes use of 20% Tetrahexyldecyl Ascorbate + 3% vitamin E + 2% ferulic acid that can assist you decelerate ageing and forestall wrinkles. It has one of many highest concentrations of those actives you’ll discover in skincare merchandise. Accessible at Blue MercuryNordstrom, and Ulta

Simmondsia Chinensis (Jojoba) Seed Oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl Ascorbate, Citrus Grandis (Grapefruit) Peel Oil, Tocopheryl Acetate, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.

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