PRODUCT REVIEW
Medik8 C-Tetra Serum
Can it cause trouble?
Buy from Amazon US $51.00
More options from: $48.00
Price as of 3/23/2025 2:12 GMT.
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What can the product work for?
Moisturizing
What does the product description say?
Brightness is then boosted by red ginseng and maracuja oil, which is naturally rich in vitamin E. Vitamin E perfectly complements the vitamin C, delivering a nourishing dose of hydration to give a soft, glowy complexion.
simmondsia chinensis seed oil
25% -
37%
Irritation risk:
Concentration: Effectiveness: HIGH
Softens the upper layer of skin and helps restore the healthy skin barrier. Has shown to help calm down inflammation in skin. It is a stable oil, meaning that it retains its properties even when exposed to air.
cyclopentasiloxane
8.9% -
13.3%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin
cyclohexasiloxane
4.8% -
7.3%
Irritation risk:
Concentration: Effectiveness:
LOW
A silicone that serves as an emollient. Helps create a nice non-greasy feels
Anti-aging
What does the product description say?
The vitamin C is combined with co-antioxidant vitamin E. C-Tetra helps to promote a visibly brighter complexion while reducing the appearance of skin aging signs .
tetrahexyldecyl ascorbate
3.3% -
4.9%
Irritation risk:
Concentration: Insufficient!
Being a lipid soluble form of vitamin C, it is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective. It might be able to help reduce pore clogging.
Evens skin tone
What does the product description say?
Helping to restore radiance and fight visible signs of ageing the combination of Vitamin C and E helps reduce fine lines and wrinkles, as well as visibly brightening the complexion and balancing skin tone.
tetrahexyldecyl ascorbate
3.3% -
4.9%
Irritation risk:
Concentration: Insufficient!
Being a lipid soluble form of vitamin C, it is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective. It might be able to help reduce pore clogging.
Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Moisturizing | |
| Anti-aging | |
| Evens skin tone |
Total Promises Fulfilled score:
25/100.
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Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 0
Potential irritants
citrus grandis peel oil
2.2% -
3.3%
Irritation risk:
A plant oil with high content of volatile compounds that, especially when exposed to air, can cause allergic reactions and irritate the skin
limonene
0.5% -
1.2%
Irritation risk:
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
Show more
Comodogenic ingredients
No comodogenic ingredients detected
User reviews (0)
Similar products & dupes
| Medik8 - C-Tetra Serum |  DeVita - Luxe C17 Serum |  African Botanics - Vita-C Corrector |  Perricone MD - Vitamin C Ester Brightening Serum |  Womaness - Fountain of Glow |  Paula's choice - Resist Ultra-Light Super Antioxidant Concentrate Serum |  Citrix - Vitamin C Pro-Collagen Brightening Serum |  Skin by Blair - Vitamin C 20% Serum |  The Ordinary - Ascorbyl Tetraisopalmitate Solution 20% in Vitamin F |  Dr. Loretta - Anti-Aging Repair Serum |  DermExcel - Collagen Serum | |
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| WIMJ similarity score |
66%
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62%
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59%
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56%
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| Irritancy | IRRITANCY
HIGH
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MEDIUM
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LOW
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HIGH
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MEDIUM
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MEDIUM
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MEDIUM
| IRRITANCY
MEDIUM
| IRRITANCY
LOW
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MEDIUM
| IRRITANCY
MEDIUM
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Ingredients & concentrations
All ingredients
Key Actives
tetrahexyldecyl ascorbate
3.3% -
4.9%
Irritation risk:
Works for:
Anti-aging,
Anti-oxidation,
Evens skin tone
Being a lipid soluble form of vitamin C, it is more stable than ascorbic acid, but still degrades quickly and needs to be stabilized in a formulation with another ingredient. It is claimed to penetrate skin better than pure vitamin C and have the the similar benefits, but solid studies of its effectiveness are lacking. Is likely to require a higher concentration in a product than pure vitamin C to be effective. It might be able to help reduce pore clogging.
cyclopentasiloxane
8.9% -
13.3%
Irritation risk:
Works for:
Moisturizing,
Mattifying
A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin
Show more
Potential irritants
citrus grandis peel oil
2.2% -
3.3%
Irritation risk:
A plant oil with high content of volatile compounds that, especially when exposed to air, can cause allergic reactions and irritate the skin
limonene
0.5% -
1.2%
Irritation risk:
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
Show more
Comodogenic ingredients
We couldn't find any comodogenic ingredients in this product
All ingredients
simmondsia chinensis seed oil
25% -
37%
Irritation risk:
Works for:
Moisturizing
Softens the upper layer of skin and helps restore the healthy skin barrier. Has shown to help calm down inflammation in skin. It is a stable oil, meaning that it retains its properties even when exposed to air.
cyclopentasiloxane
8.9% -
13.3%
Irritation risk:
Works for:
Moisturizing,
Mattifying
A silicone that helps improve the product texture and spreadability. Can absorb oil creating a short-term mattifying effect on the skin
cyclohexasiloxane
4.8% -
7.3%
Irritation risk:
Works for:
Moisturizing
A silicone that serves as an emollient. Helps create a nice non-greasy feels
Show more
Ingredient list view
Simmondsia chinensis seed oil, Cyclopentasiloxane, Cyclohexasiloxane, Tetrahexyldecyl ascorbate, Citrus grandis peel oil, Tocopheryl acetate, Ppg-12/smdi copolymer, Limonene, Citral, Linalool, Geraniol