PRODUCT REVIEW
Peter Thomas Roth Potent-C™ Vitamin C Power Eye Cream
Works for:
based on ingredients and %- Anti-aging
- Anti-oxidation
- Evens skin tone
- Moisturizing
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Can it cause trouble?
Buy from Amazon US $34.30
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Price as of 12/9/2025 4:56 GMT.
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What can the product work for?
Works for
Anti-aging
What does the product description say?
Potent-C™ Vitamin C Power Eye Cream
tetrahexyldecyl ascorbate
4.5% -
5.5%
Irritation risk:
Concentration: Effectiveness: HIGH
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.
ferulic acid
1.1% -
1.3%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%
butyrospermum parkii butter
1% -
1.2%
Irritation risk: Comedogenicity: High
Concentration: Effectiveness:
LOW
A great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals
Show more
Evens skin tone
tetrahexyldecyl ascorbate
4.5% -
5.5%
Irritation risk:
Concentration: Effectiveness: HIGH
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.
ferulic acid
1.1% -
1.3%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%
Moisturizing
polymethylsilsesquioxane
0.55% -
0.85%
Irritation risk:
Concentration: Effectiveness: HIGH
A silicone that improves product texture and helps dissolve other ingredients. Can form a non-greasy film on the skin to prevent moisture loss
sodium hyaluronate
0.3% -
0.6%
Irritation risk:
Concentration: Effectiveness: HIGH
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
soluble collagen
0.3% -
0.55%
Irritation risk:
Concentration: Effectiveness: HIGH
A typically plant-derived compound that is supposed mimic human collagen. Cannot penetrate the skin barrier so is not particularly useful in skincare products beyond attracting water to the upper layer of the skin
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Anti-oxidation
ferulic acid
1.1% -
1.3%
Irritation risk:
Concentration: Effectiveness: HIGH
A potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%
tetrahexyldecyl ascorbate
4.5% -
5.5%
Irritation risk:
Concentration: Effectiveness: HIGH
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.
ubiquinone
0.35% -
0.6%
Irritation risk:
Concentration: Effectiveness: HIGH
Coenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen
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Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging |
Total Promises Fulfilled score:
100/100.
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Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 2
Potential irritants
arnica montana flower extract
0.15% -
0.3%
Irritation risk:
A plant extract that can be irritating. It can have some anti-bacterial properties, but there are no evidence of a beneficial effect for skin
Show more
Comodogenic ingredients
butyrospermum parkii butter
1% -
1.2%
Irritation risk: Comedogenicity: High
Works for:
Moisturizing,
Anti-oxidation,
Anti-aging
A great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals
corallina officinalis extract
0.2% -
0.4%
Irritation risk: Comedogenicity: High
Works for:
Moisturizing,
Anti-oxidation
Red algae extract that helps attract water to the upper layer of the skin and might contain antioxidants
User reviews (0)
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| Irritancy | IRRITANCY
MEDIUM
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LOW
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Ingredients & concentrations
All ingredients
Key Actives
ferulic acid
1.1% -
1.3%
Irritation risk:
Works for:
Anti-oxidation,
Evens skin tone,
Anti-inflammatory,
Anti-aging
A potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%
tetrahexyldecyl ascorbate
4.5% -
5.5%
Irritation risk:
Works for:
Anti-aging,
Evens skin tone,
Anti-oxidation
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.
Show more
Potential irritants
arnica montana flower extract
0.15% -
0.3%
Irritation risk:
A plant extract that can be irritating. It can have some anti-bacterial properties, but there are no evidence of a beneficial effect for skin
Show more
Comodogenic ingredients
butyrospermum parkii butter
1% -
1.2%
Irritation risk: Comedogenicity: High
Works for:
Moisturizing,
Anti-oxidation,
Anti-aging
A great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals
corallina officinalis extract
0.2% -
0.4%
Irritation risk: Comedogenicity: High
Works for:
Moisturizing,
Anti-oxidation
Red algae extract that helps attract water to the upper layer of the skin and might contain antioxidants
All ingredients
butylene glycol
6% -
7.4%
Irritation risk:
Works for:
Moisturizing
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
tetrahexyldecyl ascorbate
4.5% -
5.5%
Irritation risk:
Works for:
Anti-aging,
Evens skin tone,
Anti-oxidation
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.
Show more
Ingredient list view
Water, Butylene glycol, Tetrahexyldecyl ascorbate, C9-12 alkane, Tocopheryl acetate, Bambusa arundinacea stem powder, Peg-100 stearate, Cetyl ricinoleate, Ferulic acid, Butyrospermum parkii butter, Behenyl alcohol, Methyl trimethicone, Glycerin, Carbomer, Methyldihydrojasmonate, Polymethylsilsesquioxane, Saccharomyces ferment filtrate, Hydrogenated lecithin, Diamond powder, Caffeine, Sodium hyaluronate, Ubiquinone, Ethylhexylglycerin, Squalane, Soluble collagen, Undaria pinnatifida extract, Caesalpinia spinosa fruit extract, Arnica montana flower extract, Olea europaea fruit oil, Corallina officinalis extract, Kappaphycus alvarezii extract, Tribehenin, C12-15 alkyl benzoate, Coco-caprylate/caprate, Caprylic/capric triglyceride, Jojoba wax peg-120 esters, Sodium hydroxide, Myristyl alcohol, Steareth-20, Mica, Sodium benzoate, Potassium sorbate, Phenoxyethanol
Sources
- Double-blind, half-face study comparing topical vitamin C and vehicle for rejuvenation of photodamage
- Application of tetra-isopalmitoyl ascorbic acid in cosmetic formulations: Stability studies and in vivo efficacy
- Ferulic Acid: Therapeutic Potential Through Its Antioxidant Property
- Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin
- Antioxidant Properties of Ferulic Acid and Its Possible Application
- Glycerol and the skin: holistic approach to its origin and functions
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- Effects of Topical Arnica Gel on Post-Laser Treatment Bruises
- Effects of microcurrent application alone or in combination with topical Hypericum perforatum L. and Arnica montana L. on surgically induced wound healing in Wistar rats
- The seamy side of natural medicines: contact sensitization to arnica (Arnica montana L.) and marigold (Calendula officinalis L.)
- Accelerated resolution of laser‐induced bruising with topical 20% arnica: a rater‐blinded randomized controlled trial
- Use of “natural” oils for moisturization: Review of olive, coconut, and sunflower seed oil
- Safety Assessment of Alkyl Esters as Used in Cosmetics
- Cosmetic allergy from myristyl alcohol
- Contact Sensitization to Emulsifying Agents: An Underrated Issue?