PRODUCT REVIEW
NEOSTRATA 15% Vitamin C + PHA Serum
Works for:
based on ingredients and %- Exfoliation
- Evens skin tone
- Anti-aging
- Anti-oxidation
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Can it cause trouble?
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What can the product work for?
Works for
Evens skin tone
What does the product description say?
Gently exfoliates the skin to Fight visible signs of oxidative stress and dark spots.
gluconolactone
3.7% -
5.5%
Irritation risk:
Concentration: Effectiveness: HIGH
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
ascorbic acid
5.6% -
8.4%
Irritation risk:
Concentration: Effectiveness: HIGH
The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging
epigallocatechin gallate
1.7% -
2.5%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A polyphenol found in tea. This particular compound abbreviated EGCG is the most powerful antioxidant among those extracted from tea (usually green tea). Unfortunately, EGCG is unstable, requires a low pH (below 4) to prevent quick degradation, and does not penetrate the skin very well. This is why the full anti-oxidant effect of EGCG is typically not realized when it is added to topical skincare
Exfoliation
What does the product description say?
Featuring a blend of antioxidants and exfoliating Polyhydroxy Acid, this face serum is clinically proven to visibly target dark spots, uneven skin tone, and texture.
gluconolactone
3.7% -
5.5%
Irritation risk:
Concentration: Effectiveness: HIGH
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
Anti-aging
ascorbic acid
5.6% -
8.4%
Irritation risk:
Concentration: Effectiveness: HIGH
The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging
gluconolactone
3.7% -
5.5%
Irritation risk:
Concentration: Effectiveness: HIGH
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
epigallocatechin gallate
1.7% -
2.5%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A polyphenol found in tea. This particular compound abbreviated EGCG is the most powerful antioxidant among those extracted from tea (usually green tea). Unfortunately, EGCG is unstable, requires a low pH (below 4) to prevent quick degradation, and does not penetrate the skin very well. This is why the full anti-oxidant effect of EGCG is typically not realized when it is added to topical skincare
Anti-oxidation
ascorbic acid
5.6% -
8.4%
Irritation risk:
Concentration: Effectiveness: HIGH
The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging
gluconolactone
3.7% -
5.5%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
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
epigallocatechin gallate
1.7% -
2.5%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
A polyphenol found in tea. This particular compound abbreviated EGCG is the most powerful antioxidant among those extracted from tea (usually green tea). Unfortunately, EGCG is unstable, requires a low pH (below 4) to prevent quick degradation, and does not penetrate the skin very well. This is why the full anti-oxidant effect of EGCG is typically not realized when it is added to topical skincare
Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Exfoliation | |
| 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: 0
Potential irritants
ascorbic acid
5.6% -
8.4%
Irritation risk:
Works for:
Anti-aging,
Anti-oxidation,
Evens skin tone
The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging
gluconolactone
3.7% -
5.5%
Irritation risk:
Works for:
Anti-aging,
Moisturizing,
Exfoliation,
Evens skin tone,
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
Show more
Comodogenic ingredients
No comodogenic ingredients detected
User reviews (0)
Similar products & dupes
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| WIMJ similarity score |
71%
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| Irritancy | IRRITANCY
LOW
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LOW
| IRRITANCY
HIGH
| IRRITANCY
HIGH
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LOW
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LOW
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LOW
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LOW
| IRRITANCY
LOW
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LOW
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LOW
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LOW
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Ingredients & concentrations
All ingredients
Key Actives
gluconolactone
3.7% -
5.5%
Irritation risk:
Works for:
Anti-aging,
Moisturizing,
Exfoliation,
Evens skin tone,
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
epigallocatechin gallate
1.7% -
2.5%
Irritation risk:
Works for:
Anti-blemish,
Anti-oxidation,
Anti-aging,
Evens skin tone,
Moisturizing
A polyphenol found in tea. This particular compound abbreviated EGCG is the most powerful antioxidant among those extracted from tea (usually green tea). Unfortunately, EGCG is unstable, requires a low pH (below 4) to prevent quick degradation, and does not penetrate the skin very well. This is why the full anti-oxidant effect of EGCG is typically not realized when it is added to topical skincare
Show more
Potential irritants
ascorbic acid
5.6% -
8.4%
Irritation risk:
Works for:
Anti-aging,
Anti-oxidation,
Evens skin tone
The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging
gluconolactone
3.7% -
5.5%
Irritation risk:
Works for:
Anti-aging,
Moisturizing,
Exfoliation,
Evens skin tone,
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
Show more
Comodogenic ingredients
We couldn't find any comodogenic ingredients in this product
All ingredients
propanediol
23% -
34%
Irritation risk:
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
ascorbic acid
5.6% -
8.4%
Irritation risk:
Works for:
Anti-aging,
Anti-oxidation,
Evens skin tone
The most well-researched antioxidant that works in skin. Helps neutralize free radicals supporting collagen production, helping to even out the skin tone and preventing early signs of aging
Show more
Ingredient list view
Propanediol, Water, Ascorbic acid, Gluconolactone, Citric acid, Epigallocatechin gallate, Chrysanthemum parthenium flower/leaf/stem juice, Pentylene glycol, Sodium metabisulfite, Sodium hydroxide, Caprylyl glycol, Sodium benzoate, Potassium sorbate, Phenoxyethanol
Sources
- 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
- Great green tea ingredient? A narrative literature review on epigallocatechin gallate and its biophysical properties for topical use in dermatology
- Comparative Evaluation of Different Co-Antioxidants on the Photochemical- and Functional-Stability of Epigallocatechin-3-gallate in Topical Creams Exposed to Simulated Sunlight
- Photodegradation of (−)-epigallocatechin-3-gallate in topical cream formulations and its photostabilization