PRODUCT REVIEW
Peter Thomas Roth Potent-C Bright & Plump Moisturizer
Works for:
based on ingredients and %- Moisturizing
- Evens skin tone
- Anti-aging
- Anti-oxidation
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Can it cause trouble?
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Product summary
What can the product work for?
Works for
Anti-aging
What does the product description say?
Benefits of Peter Thomas Roth Potent-C Bright & Plump Moisturizer 50ml Restores youthful volume Reduces the appearance of fine lines Gives a radiance to skin How to use Apply twice daily to your cleansed face and neck. Size 50ml
tetrahexyldecyl ascorbate
4.2% -
5.2%
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
1.4% -
1.7%
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%
carnosine
0.35% -
0.6%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A type of peptide. It attracts water to the upper layer of the skin. It can help neutralize free radicals in skin combatting the sun damage
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Evens skin tone
What does the product description say?
Embracing the strength of, THD Ascorbate, an ultra-stable scientific breakthrough ingredient that's a huge 50x more powerful than traditional Vitamin C, this innovative formula harnesses the future of vitamin C. With a concentration of 10% THD Ascorbate, this potent formula is further boosted by 3% vitamin E, and 2% ferulic acid that works to provide your skin with complete anti-ageing, firming, and brightening benefits, whilst addressing and improving the look of uneven skin tone and texture.
tetrahexyldecyl ascorbate
4.2% -
5.2%
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
1.4% -
1.7%
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%
gluconolactone
0.5% -
0.8%
Irritation risk:
Concentration: Insufficient!
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
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Moisturizing
What does the product description say?
Potent-C Bright & Plump Moisturizer
ceramide np
0.45% -
0.7%
Irritation risk:
Concentration: Effectiveness: HIGH
A type of lipid similar to ceramides naturally present in skin. Helps to soften the upper layer of the skin and supports the skin barrier function to keep it hydrated. Can help to prevent inflammation in skin
glycerin
2.8% -
3.4%
Irritation risk:
Concentration: Effectiveness: HIGH
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
glycine soja sterols
0.45% -
0.7%
Irritation risk:
Concentration: Effectiveness: HIGH
An emollient that helps soften the skin
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Anti-oxidation
ferulic acid
1.4% -
1.7%
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
4.2% -
5.2%
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.
carnosine
0.35% -
0.6%
Irritation risk:
Concentration: Effectiveness: HIGH
A type of peptide. It attracts water to the upper layer of the skin. It can help neutralize free radicals in skin combatting the sun damage
Show more
Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Moisturizing | |
| Evens skin tone |
Total Promises Fulfilled score:
100/100.
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Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 1
Potential irritants
curcuma longa root extract
0.6% -
0.9%
Irritation risk:
Works for:
Anti-inflammatory
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
zingiber officinale root extract
0.55% -
0.85%
Irritation risk:
Works for:
Anti-oxidation
A plant extract that can contain an irritating essential oil. Might have some anti-oxidant effect, but evidence is lacking
Show more
Comodogenic ingredients
butyrospermum parkii butter
0.6% -
0.85%
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
User reviews (0)
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| Common:
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| Irritancy | IRRITANCY
MEDIUM
| IRRITANCY
LOW
| IRRITANCY
LOW
| IRRITANCY
LOW
| IRRITANCY
LOW
| IRRITANCY
MEDIUM
| IRRITANCY
MEDIUM
| IRRITANCY
LOW
| IRRITANCY
MEDIUM
| IRRITANCY
LOW
| IRRITANCY
LOW
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Ingredients & concentrations
All ingredients
Key Actives
gluconolactone
0.5% -
0.8%
Irritation risk:
Works for:
Exfoliation,
Evens skin tone,
Anti-aging,
Moisturizing,
Anti-oxidation,
Anti-blemish
A polyhydroxy acid (PHA) that helps shed the dead cells from the skin surface revealing smoother skin. Is believed to be genter than AHAs. It helps attract water to the upper layer of the skin and can stimulate production of skin's own hyaluronic acid resulting in improved hydration levels. It has been shown to be helpful against acne and clogged pores if used consistently (e.g over a period of 12 weeks) in high enough concentration. It can help reduce fine lines and wrinkles and improve skin tone with long-term application. Can help neutralize free radicals
ferulic acid
1.4% -
1.7%
Irritation risk:
Works for:
Anti-oxidation,
Evens skin tone,
Anti-aging,
Anti-inflammatory
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%
Show more
Potential irritants
curcuma longa root extract
0.6% -
0.9%
Irritation risk:
Works for:
Anti-inflammatory
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
zingiber officinale root extract
0.55% -
0.85%
Irritation risk:
Works for:
Anti-oxidation
A plant extract that can contain an irritating essential oil. Might have some anti-oxidant effect, but evidence is lacking
Show more
Comodogenic ingredients
butyrospermum parkii butter
0.6% -
0.85%
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
All ingredients
propanediol
4.7% -
5.7%
Irritation risk:
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
tetrahexyldecyl ascorbate
4.2% -
5.2%
Irritation risk:
Works for:
Anti-oxidation,
Anti-aging,
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.
Show more
Ingredient list view
Water, Propanediol, Tetrahexyldecyl ascorbate, C9-12 alkane, Glycerin, Tocopheryl acetate, Behenyl alcohol, Stearic acid, Ferulic acid, Cetyl palmitate, Polyglyceryl-2 stearate, Oleic acid, Soy acid, Polymethylsilsesquioxane, Sodium hyaluronate, Hydrolyzed collagen, Hydrolyzed elastin, Diamond powder, Curcuma longa root extract, Zingiber officinale root extract, Tocopherol, Haematococcus pluvialis extract, Glyceryl stearate, Gluconolactone, Stearyl alcohol, Polyglyceryl-6 distearate, Carbomer, Coco-caprylate/caprate, Sodium pca, Disodium edta, Vegetable oil, Jojoba esters, Sodium stearoyl lactylate, Cetyl alcohol, Butyrospermum parkii butter, Histidine hcl, Sodium lactate, Xanthan gum, Polyglyceryl-3 beeswax, Sodium carboxymethyl beta-glucan, Calcium gluconate, Ceramide np, Glycine soja sterols, Sucrose stearate, Carnosine, Lactic acid, Lecithin, Polyglyceryl-10 laurate, Wheat amino acids, Ethylhexylglycerin, Mica, Edta, Sodium hydroxide, Potassium sorbate, Sodium benzoate, 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
- Glycerol and the skin: holistic approach to its origin and functions
- 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
- Safety Assessment of Polyglyceryl Fatty Acid Esters as Used in Cosmetics
- Anti-Inflammatory and Skin Barrier Repair Effects of Topical Application of Some Plant Oils
- https://www.sciencedirect.com/science/article/pii/0168365995000887
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- 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
- Some phytochemical, pharmacological and toxicological properties of ginger (Zingiber officinale Roscoe): A review of recent research
- Vitamin E in dermatology
- Vitamin E and Skin Health
- Effective Inhibition of Skin Cancer, Tyrosinase, and Antioxidative Properties by Astaxanthin and Astaxanthin Esters from the Green Alga Haematococcus pluvialis
- Preliminary Clinical Evaluation of Toxicity and Efficacy of A New Astaxanthin-rich Haematococcus pluvialis Extract
- Astaxanthin in Skin Health, Repair, and Disease: A Comprehensive Review
- A comparative study of gluconolactone versus benzoyl peroxide in the treatment of acne
- The Polyhydroxy Acid Gluconolactone Protects Against Ultraviolet Radiation in an In Vitro Model of Cutaneous Photoaging
- Applications of hydroxy acids: classification, mechanisms, and photoactivity
- The efficacy of glycolic acid, salicylic acid, gluconolactone, and licochalcone A combined with 0.1% adapalene vs adapalene monotherapy in mild-to-moderate acne vulgaris: a double-blinded within-person comparative study
- A polyhydroxy acid skin care regimen provides antiaging effects comparable to an alpha-hydroxyacid regimen
- The use of polyhydroxy acids (PHAs) in photoaged skin
- Blackwell Publishing, Ltd. Alpha-hydroxyacids and carboxylic acids
- An evaluation of a polyhydroxy acid skin care regimen in combination with azelaic acid 15% gel in rosacea patients
- Aging Skin: Causes, Treatments, and Prevention
- Clinical and cosmeceutical uses of hydroxyacids
- Polyhydroxy Acids (PHAs) Provide Conditioning Effects to Skin Without Increasing Sensitivity to UV Light
- Safety Assessment of Alkyl Esters as Used in Cosmetics
- Safety Assessment of α-Amino Acids as Used in Cosmetics
- Histidine and/or Histidine Derivative for the Treatment of Inflammatory Skin Diseases
- Skin hydration is significantly increased by a cream formulated to mimic the skin’s own natural moisturizing systems
- Topically Applied Ceramides Interact with the Stratum Corneum Lipid Matrix in Compromised Ex Vivo Skin
- Biological activities of the natural imidazole-containing peptidomimetics n-acetylcarnosine, carcinine and l-carnosine in ophthalmic and skin care products
- Epidermal and dermal effects of topical lactic acid
- Dual Effects of Alpha-Hydroxy Acids on the Skin