Works for:
based on ingredients and %- Evens skin tone
- Anti-aging
- Moisturizing
- Anti-oxidation
Can it cause trouble?
- Irritation risk: medium
- Comedogenic risk ingredients: 0
Key actives
Product Summary
"Peter Thomas Roth - Potent-C Power Serum" is effective for: Anti-aging and Evens skin tone
This product could be helpful for: Moisturizing, but its actives are not the most effective or are not well-studied.
Ingredient callouts
- Humectants (soluble collagen 0.30% - 0.55%, sodium hyaluronate 0.30% - 0.60%, saccharomyces ferment filtrate 0.50% - 0.70% and glycerin 0.60% - 0.90%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
Price
The product retails from 55.50$ up to 105.00$ in the United States, from 28.20£ up to 1692.00£ in the United Kingdom, from 78.50CA$ up to 132.30CA$ in Canada and from 52.90A$ up to 102.72A$ in Australia.
For a detailed price comparison: click here.
Anti-aging
What does the product description say?
Brightening Vitamin C serum with 20% THD Ascorbate, an advanced form of Vitamin C that is 50 times more powerful than traditional Vitamin C, helps defy 7 signs of aging* at once, helping to visibly improve the look of fine lines, wrinkles, uneven tone, loss of brightness, loss of firmness, uneven texture and dehydration.
Source: Peter Thomas Roth
This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains tetrahexyldecyl ascorbate.
These ingredients in the product can also be helpful, even though there is less evidence for their effectiveness: ferulic acid.
Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.
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.
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%
Anti-oxidation
This product contains antioxidants (ferulic acid, tetrahexyldecyl ascorbate) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).
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.
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%
A more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.
A plant extract that can contain an irritating essential oil. Might have some anti-oxidant effect, but evidence is lacking
A plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritating
Evens skin tone
What does the product description say?
Brightening Vitamin C serum with 20% THD Ascorbate, an advanced form of Vitamin C that is 50 times more powerful than traditional Vitamin C, helps defy 7 signs of aging* at once, helping to visibly improve the look of fine lines, wrinkles, uneven tone, loss of brightness, loss of firmness, uneven texture and dehydration.
Source: Peter Thomas Roth
This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: tetrahexyldecyl ascorbate
The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually can help even out the skin tone: ferulic acid.
Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.
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.
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
What does the product description say?
Brightening Vitamin C serum with 20% THD Ascorbate, an advanced form of Vitamin C that is 50 times more powerful than traditional Vitamin C, helps defy 7 signs of aging* at once, helping to visibly improve the look of fine lines, wrinkles, uneven tone, loss of brightness, loss of firmness, uneven texture and dehydration.
Source: Peter Thomas Roth
This product can help improve hydration of the skin with the two types of ingredients.
The first type is called “humectants”:
these ingredients help attract water.
When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from
within deeper layers of the skin. The following ingredients in this product do the job:
glycerin, sodium hyaluronate.
This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: squalane, jojoba esters.
An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
An emollient made of jojoba oil. Helps soften the skin and support its barrier function
Helps soften the skin and attract water to its upper layer. Helps create nice product texture
A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together
Helps to soften the upper layer of the skin without creating a greasy texture
A type of silicone that helps to soften the upper layer of the skin and create a nice product finish on the skin
Helps oil and water mix together while softening the upper layer of the skin
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
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Evens skin tone | |
| Moisturizing |
Total Promises Fulfilled score: 91/100.
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Potential irritants
Comedogenic ingredients
No comedogenic ingredients detected
User reviews (1)
Averages from community submissions.
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| Product | Similarity | Price | Irritancy |
|---|---|---|---|
 Peter Thomas Roth Potent-C Power Serum | Current | $80.75 | |
Dr. Sam Bunting FLAWLESS VITAMIN C NAD+ SERUM | 55% | - | |
KYLIE SKIN Vitamin C Serum | 54% | ≈ $36.60 | |
 Element Eight O2 Vitamin C Brighten Defend Serum | 53% | $295.00 | |
 MUTHA No.1 Serum | 52% | ≈ $154.09 | |
INNBEAUTY PROJECT Pro C Serum | 52% | $64.00 |
Key Actives
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%
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.
An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
An emollient made of jojoba oil. Helps soften the skin and support its barrier function
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
Potential irritants
A plant extract that can contain an irritating essential oil. Might have some anti-oxidant effect, but evidence is lacking
A plant extract that can contain an active compound curcumin, that may have some anti-inflammatory properties when applied to the skin, but solid research is lacking and the typical concentration used in skincare products is too low. Can be an irritant
A plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritating
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.
A more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.
Helps oil and water mix together while softening the upper layer of the skin
An emollient made of jojoba oil. Helps soften the skin and support its barrier function
A preservative that comes from radishes fermented by a bacteria. New research suggests that the preservation properties in the ingredient come from an ammonium salt that is not present naturally in radish root but used in its cultivation. Is problematic because the exact amount of the preservative agents is difficult to determine
Helps water and oil mix together. Could be an allergen (beeswax)
Comedogenic ingredients
We couldn't find any comedogenic ingredients in this product
All ingredients
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.
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
A type of silicone that helps to soften the upper layer of the skin and create a nice product finish on the skin
Helps soften the skin and attract water to its upper layer. Helps create nice product texture
A more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.
Helps oil and water mix together while softening the upper layer of the skin
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%
An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.
Helps to retain moisture by creating a protective barrier on the skin. Rich in fatty acids. Improves product texture and helps with the penetration of other ingredients.
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
A plant extract that can contain an irritating essential oil. Might have some anti-oxidant effect, but evidence is lacking
A plant extract that can contain an active compound curcumin, that may have some anti-inflammatory properties when applied to the skin, but solid research is lacking and the typical concentration used in skincare products is too low. Can be an irritant
A plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritating
An emollient made of jojoba oil. Helps soften the skin and support its barrier function
A preservative that comes from radishes fermented by a bacteria. New research suggests that the preservation properties in the ingredient come from an ammonium salt that is not present naturally in radish root but used in its cultivation. Is problematic because the exact amount of the preservative agents is difficult to determine
Helps to soften the upper layer of the skin without creating a greasy texture
A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together
Helps water and oil mix together. Could be an allergen (beeswax)
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
Creates an illusion of smoother and more radiant skin tone. Adds shimmer to the skin by reflecting light
A preservative. It helps prevent bacterial growth in cosmetic products
Ingredient list view
Water, Tetrahexyldecyl ascorbate, Butylene glycol, C9-12 alkane, Caprylyl methicone, C10-18 triglycerides, Tocopheryl acetate, Polyglyceryl-6 distearate, Ferulic acid, Squalane, Hydrogenated lecithin, Propanediol, Sodium hyaluronate, Zingiber officinale root extract, Curcuma longa root extract, Panax ginseng root extract, Jojoba esters, Leuconostoc/radish root ferment filtrate, Coco-caprylate/caprate, Cetyl alcohol, Polyglyceryl-3 beeswax, Xanthan gum, Glycerin, Sodium phytate, Potassium sorbate, Sodium benzoate, Mica, Ethylhexylglycerin, Phenoxyethanol
- 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
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- Some phytochemical, pharmacological and toxicological properties of ginger (Zingiber officinale Roscoe): A review of recent research
- Vaughn, A. R., Branum, A., & Sivamani, R. K. (2016). Effects of Turmeric (Curcuma longa) on Skin Health: A Systematic Review of the Clinical Evidence. Phytotherapy Research, 30(8), 1243–1264. doi:10.1002/ptr.5640
- Ginseng in Dermatology: A Review
- Antiaging effects of the mixture of Panax ginseng and Crataegus pinnatifida in human dermal fibroblasts and healthy human skin
- Safety Assessment of Alkyl Esters as Used in Cosmetics
- Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmetics
- Glycerol and the skin: holistic approach to its origin and functions