Medik8 C-Tetra Day Cream Review

Medik8 C-Tetra Day Cream
3.4
/ 10
Moisturizing
3.9 Humectancy icon Humectancy
3.0 Occlusivity icon Occlusivity
Rich
in Antioxidants
Ingredients

Medik8 C-Tetra Day Cream Ingredients

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Full Ingredient List (INCI):

Water, Heptyl Undecylenate, Caprylic/Capric Triglyceride, Tetrahexyldecyl Ascorbate, Methylpropanediol, Cetearyl Olivate, Cetearyl Isononanoate, Distarch Phosphate, Tocopheryl Acetate, Sodium Polyacrylate, Sorbitan Olivate, Sodium Hyaluronate, Caprylyl Glycol, Glycerin, Disodium EDTA, Phenylpropanol, Citrus Grandis Peel Oil, Citrus Limon (Lemon) Peel Oil, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Pelargonium Graveolens Flower Oil, Sodium Hydroxide, Limonene, Citronellol, Linalool, Geraniol, Citral
Review

Does Medik8 C-Tetra Day Cream Work?

 
According to CreamScan's analysis of the ingredient list, here’s what Medik8 C-Tetra Day Cream has to offer:
 
✅ Light moisturizing. It has a moisturizing rating of 3.4 out of 10.
✅ Antioxidant protection

  

Key Benefits of Medik8 C-Tetra Day Cream

 
These are the key benefits you can expect from using Medik8 C-Tetra Day Cream:
 

🔵 Basic Moisturizer for Combination and Oily Skin

According to CreamScan analysis, Medik8 C-Tetra Day Cream is lightly moisturizing, with a moisturizing rating of 3.4 out of 10.

Is it more humectant or occlusive? This product has relatively comparable levels of humectancy and occlusivity: a moderate humectancy of 3.9 out of 10, primarily due to the substantial concentration of Methylpropanediol (est. ≈3.0%), and a moderate occlusivity of 3.0 out of 10, solely because of the high content of Caprylic/Capric Triglyceride (est. ≈6.0%).

This product, when used alone as a moisturizer, provides moderate hydration in a relatively lightweight, non-greasy formula. This could work for people with oily skin who need a basic level of hydration.

Please refer to the Ratings section below for details of the moisturizing rating calculation.

🍀 Rich in Skin-Protecting Antioxidants

We estimate that Medik8 C-Tetra Day Cream is rich (> 3%) in antioxidants, specifically Tetrahexyldecyl Ascorbate (est. ≈4.0%).

A key benefit of antioxidants is their ability to reduce oxidative stress caused by free radicals and therefore prevent accelerated skin aging. Studies also show that antioxidants can protect against environmental damage such as UV radiation and pollution, and help reduce inflammation and skin redness.

📌 Please note that this is not a complete list of benefits. We are in the process of enhancing our model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.

Things to Be Aware Of: Medik8 C-Tetra Day Cream

 
CreamScan identified a few things to consider before adding Medik8 C-Tetra Day Cream to your skincare routine:
 

⚠️ Questionable anti-wrinkle efficacy

If one of your main reasons for choosing Medik8 C-Tetra Day Cream is its potential anti-aging effects, please note that, according to CreamScan analysis, it currently has a zero anti-wrinkle rating.

It contains Tetrahexyldecyl Ascorbate, an ingredient often marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of Tetrahexyldecyl Ascorbate provide insufficient evidence of its efficacy according to CreamScan Research Evaluation Standards.

While this does not categorically rule out the possibility that Tetrahexyldecyl Ascorbate may reduce wrinkles, its efficacy is not supported by convincing, vehicle-controlled, double-blind clinical studies - at least none that were available to the CreamScan team at the time of publication.

Therefore, this ingredient does not generate the anti-wrinkle rating.

📌 Moisturizers, when used regularly, are proven to prevent wrinkle formation and even reduce existing wrinkles. Therefore, this product, like any other moisturizer, can deliver some anti-wrinkle effects through its moisturizing action.

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Pros & Cons of Medik8 C-Tetra Day Cream

 
Here’s an overview of the pros and cons of Medik8 C-Tetra Day Cream to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

✅ Basic moisturizing that can work for combination and oily skin
✅ Lightweight texture
✅ Rich in antioxidants that combat oxidative stress associated with accelerated skin aging and defend against environmental damage
 

⭕ Cons: 

⚠️ Questionable anti-wrinkle efficacy
   

Summary: Medik8 C-Tetra Day Cream

 
Based on the ingredient list analysis, CreamScan AI suggests that Medik8 C-Tetra Day Cream
, as a moisturizer, provides basic, lightweight hydration, making it suitable for combination and oily skin.
 
With its high antioxidant content, Medik8 C-Tetra Day Cream helps protect against free radical damage and offers multiple benefits for all skin types, including preventing premature aging, defending against environmental damage, and calming inflammation.
 
That said, there are some things about Medik8 C-Tetra Day Cream worth noting.
 
If one of your main reasons for considering Medik8 C-Tetra Day Cream is its potential anti-aging effects, please note that, according to CreamScan analysis, its anti-wrinkle efficacy is questionable. None of the ingredients in this product provide substantial evidence of their anti-wrinkle efficacy according to CreamScan Research Evaluation Standards.
 
📌 Fact check. At CreamScan, we are committed to accuracy and fairness. If you spot any errors or something that doesn’t seem right, please click here to let us know. We regularly update the ingredient lists and monitor the latest research on ingredient efficacy to ensure that our information remains as complete and precise as possible. The information provided here is for informational purposes only and does not substitute professional advice. We do not guarantee the efficacy or safety of any product, as individual results may vary.

 

Ingredient Breakdown

Est. % Ingredient Origin Functions
65
9
6
4
3
2.5
2
1.5
1.3
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.15
Est. %
Water
Function:
Origin:
Heptyl Undecylenate
Function:
Origin:
Caprylic/Capric Triglyceride
Function:
Origin:
Tetrahexyldecyl Ascorbate
Function:
Origin:
Methylpropanediol
Function:
Origin:
Cetearyl Olivate
Function:
Origin:
Cetearyl Isononanoate
Function:
Origin:
Distarch Phosphate
Function:
Origin:
Tocopheryl Acetate
Function:
Origin:
Sodium Polyacrylate
Function:
Origin:
Sorbitan Olivate
Function:
Origin:
Sodium Hyaluronate
Function:
Origin:
Caprylyl Glycol
Function:
Origin:
Glycerin
Function:
Origin:
Disodium EDTA
Function:
Origin:
Phenylpropanol
Function:
Origin:
Citrus Grandis Peel Oil
Function:
Origin:
Citrus Limon (Lemon) Peel Oil
Function:
Origin:
Citrus Aurantium Bergamia (Bergamot) Fruit Oil
Function:
Origin:
Pelargonium Graveolens Flower Oil
Function:
Origin:
Sodium Hydroxide
Function:
Origin:
Limonene
Function:
Origin:
Citronellol
Function:
Origin:
Linalool
Function:
Origin:
Geraniol
Function:
Origin:
Citral
Function:
Origin:

Ratings

All humectants
3.9
3
0.3
0.3
0.3
Benchmark
10
All occlusives
6.0
6.0
Benchmark
20
Moisturizing rating
3.4
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 3.9 10
3.9
3
0.3
0.3
0.3
Occlusivity All occlusives 6.0 20
3.0
6.0
Moisturizing rating
3.4
Ingredient Est. % Benchmark Humectancy
3
0.3
0.3
0.3
All humectants 3.9 10
3.9
All humectants
3.9
3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
6
All occlusives 6.0 20
3.0
All occlusives
6.0
6.0
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
n/a
- 4 -
Total
0
Tetrahexyldecyl Ascorbate
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
4
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
4
1.3
0.3
0.3
All antioxidants 5.9 3 Rich in antioxidants
All antioxidants
5.9
Tetrahexyldecyl Ascorbate
4
Tocopheryl Acetate
1.3
Sodium Hyaluronate
0.3
Citrus Grandis Peel Oil
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
None
All soothing 0 5 No
All soothing
0
None
Benchmark
5

Ingredients explained

Water
Est. %65
Function
Origin
WaterThe most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Heptyl Undecylenate
Est. %9
Function
Origin
Heptyl Undecylenate
Caprylic/Capric Triglyceride
Est. %6
Function
Origin
Caprylic/Capric TriglycerideA natural occlusive moisturizing and emollient ingredient, it is a blend of glycerin and two fatty acids, caprylic and capric acid. It creates an oil-based protective layer on the skin, thereby preventing water loss.
Tetrahexyldecyl Ascorbate
Est. %4
Function
Origin
Tetrahexyldecyl AscorbateA lipid-soluble form of vitamin C that is more stable and less irritating than ascorbic acid. According to a recent clinical study, THDA has all the capabilities of regular vitamin C, including anti-wrinkle and anti-pigment activity.
Methylpropanediol
Est. %3
Function
Origin
MethylpropanediolMethylpropanediol is a unique glycol that contains two primary hydroxyl groups. That makes methylpropanediol a powerful humectant and an excellent solvent.
Cetearyl Olivate
Est. %2.5
Function
Origin
Cetearyl Olivate

A multifunctional ingredient derived from plants that primarily serves as an emulsifier. Supplied as a waxy ivory-colored flake, it can also be used as an emollient and slip modifier that gives a product an overall light, silky finish.

Cetearyl Isononanoate
Est. %2
Function
Origin
Cetearyl IsononanoateA naturally-derived (coconut or palm oil based) oil with medium richness. It makes skin feel soft and smooth.
Distarch Phosphate
Est. %1.5
Function
Origin
Distarch Phosphate

Description is coming soon

Tocopheryl Acetate
Est. %1.3
Function
Origin
Tocopheryl Acetate

An antioxidant derivative of tocopherol (vitamin E). It helps to protect cells from free radicals and UV damage through the conversion to active vitamin E in the skin. It is more stable than tocopherol.

Sodium Polyacrylate
Est. %1
Function
Origin
Sodium PolyacrylateThis white powder is primarily used as a viscosity controlling agent. It is added to the water phase, which then thickens to form a clear gel. Sodium polyacrylate can also serve as an emollient, absorbent, and emulsion stabilizer.
Sorbitan Olivate
Est. %0.3
Function
Origin
Sorbitan OlivateAn ester of sorbitol (a type of sugar alcohol) and olive oil fatty acids. It is used as an emulsifying agent to stabilize oil droplets in water (or vice versa).
Sodium Hyaluronate
Est. %0.3
Function
Origin
Sodium Hyaluronate

A sodium salt of famous hyaluronic acid. A potent humectant that hydrates the skin, supports collagen function, and fills out small wrinkles. Sodium hyaluronate also offers soothing and antioxidant properties.

Caprylyl Glycol
Est. %0.3
Function
Origin
Caprylyl GlycolAn emollient that improves product spreadability and offers a silky feel on the skin. It also acts as a preservative booster that improves the efficacy of other preservatives. According to the manufacturer, it is also a humectant moisturizer.
Glycerin
Est. %0.3
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Disodium EDTA
Est. %0.3
Function
Origin
Disodium EDTAA synthetic chelator that helps to maintain the look and smell of a product by 'locking up' troublesome metal ions.
Phenylpropanol
Est. %0.3
Function
Origin
PhenylpropanolPhenylpropanol is a naturally occurring component of many essential oils. It is a colourless, oily liquid with a sweet, floral, balsamic scent. It is used in skincare as a solvent for oil-soluble ingredients and as a fragrance component.
Citrus Grandis Peel Oil
Est. %0.3
Function
Origin
Citrus Grandis Peel Oil

A fragrant essential oil obtained from pomelo peels - sometimes mislabeled as grapefruit. The high limonene content is responsible for its citrusy scent. It may induce sun allergies in people sensitive to citrus fruits.

Citrus Limon (Lemon) Peel Oil
Est. %0.3
Function
Origin
Citrus Limon (Lemon) Peel Oil

A fragrant essential oil extracted from the rind or peel of a lemon. It is mainly comprised of limonene (up to 70%) and has a fresh, citrusy scent. Lemon peel oil may cause a sun-induced skin rash in people with a sensitivity towards citrus fruits.

Citrus Aurantium Bergamia (Bergamot) Fruit Oil
Est. %0.3
Function
Origin
Citrus Aurantium Bergamia (Bergamot) Fruit Oil

An essential oil expressed from the peels of the bergamot orange. The scent of bergamot oil is woodier than those of other citrus essential oils. This essential oil is still not recommended if you are sensitive to citrus fruits.

Pelargonium Graveolens Flower Oil
Est. %0.3
Function
Origin
Pelargonium Graveolens Flower OilA fragrant essential oil with a distinct, rose-like scent derived from rose geranium. It is widely used in aromatherapy and massage therapy to ease tension. People with sensitive skin should try to avoid it, or at least do a patch test before using it.
Sodium Hydroxide
Est. %0.3
Function
Origin
Sodium Hydroxide

An ingredient that is able to bring the pH of a product up, thereby making it less harsh on the skin.

Limonene
Est. %0.3
Function
Origin
Limonene

One of the most used fragrances in skincare products. It is produced from the peels of citrus fruits and has a fresh, pleasant, citrusy smell. People who are sensitive to citrus should try to avoid it, or at least do a patch test before using it.

Citronellol
Est. %0.3
Function
Origin
Citronellol

A fragrant compound found naturally in many essential oils (mainly lemongrass). It can have a lemon or a rose scent. People with sensitive skin should try to avoid products with citronellol, or at least do a patch test before using it.

Linalool
Est. %0.3
Function
Origin
LinaloolA fragrant, volatile compound naturally present in many essential oils. It has a pleasant scent and is often used in skincare products as a fragrance. People with sensitive skin should try to avoid it, or at least do a patch test before using it.
Geraniol
Est. %0.3
Function
Origin
Geraniol

A fragrant, volatile, plant-based, liquid chemical that can be naturally found in many essential oils (specifically rose, palmarosa, citronella). It has a rose-like scent. It is a potential irritant and may cause an allergic reaction in some people.

Citral
Est. %0.15
Function
Origin
Citral

A fragrant compound found in many essential oils (especially lemon myrtle and lemongrass essential oil). It has a sweet, lemon-like scent. People with sensitive skin should try to avoid products with citral, or at least do a patch test before using.