PRODUCT REVIEW
COSRX The Vitamin C 23 Serum
Works for:
based on ingredients and %- Moisturizing
- Anti-aging
- Evens skin tone
- Anti-oxidation
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Can it cause trouble?
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Product summary
What can the product work for?
Anti-aging
What does the product description say?
23% Pure Vitamin C (Ascorbic acid) Antioxidant activity, brightening(improve blemishes and brighten skin), reduce wrinkles and enhance elasticity.
ascorbic acid
23%
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
acetyl glucosamine
0.35% -
0.6%
Irritation risk:
Concentration: Effectiveness: HIGH
An effective moisturizing ingredient that also has been shown to be effective in evening out the skin tone and reducing hyperpigmentation. It can help somewhat reduce wrinkles in skin
adenosine
0.4% -
0.6%
Irritation risk:
Concentration: Effectiveness: HIGH
Might help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)
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Evens skin tone
What does the product description say?
Packed with 23% vitamin C to effectively prevent melanin synthesis fading acne scars and hyperpigmentation whilst brightening the complexion Infused with an antioxidant-rich Vitamin E derivative to amplify the effects of Vitamin C Enriched with sodium hyaluronate to maintain the moisture level and allantoin to soothe skin irritation
ascorbic acid
23%
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
acetyl glucosamine
0.35% -
0.6%
Irritation risk:
Concentration: Effectiveness: HIGH
An effective moisturizing ingredient that also has been shown to be effective in evening out the skin tone and reducing hyperpigmentation. It can help somewhat reduce wrinkles in skin
glutathione
0.45% -
0.7%
Irritation risk:
Concentration: Effectiveness: HIGH
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
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Moisturizing
What does the product description say?
Packed with 23% vitamin C to effectively prevent melanin synthesis fading acne scars and hyperpigmentation whilst brightening the complexion Infused with an antioxidant-rich Vitamin E derivative to amplify the effects of Vitamin C Enriched with sodium hyaluronate to maintain the moisture level and allantoin to soothe skin irritation
glutathione
0.45% -
0.7%
Irritation risk:
Concentration: Effectiveness: HIGH
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
helianthus annuus seed oil
0.25% -
0.45%
Irritation risk:
Concentration: Effectiveness: HIGH
A great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function
acetyl glucosamine
0.35% -
0.6%
Irritation risk:
Concentration: Effectiveness: HIGH
An effective moisturizing ingredient that also has been shown to be effective in evening out the skin tone and reducing hyperpigmentation. It can help somewhat reduce wrinkles in skin
Show more
Anti-oxidation
tocotrienols
0.3% -
0.55%
Irritation risk:
Concentration: Effectiveness: HIGH
A type of vitamin E that is more powerful in neutralizing free radicals compared to its other forms
glutathione
0.45% -
0.7%
Irritation risk:
Concentration: Effectiveness: HIGH
A peptide that can help neutralize free radicals in skin and reduce melanin production resulting in skin lightening effect and reduction in hyperpigmentation. It can also help attract moisture to the upper layer of the skin
ascorbic acid
23%
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
Show more
Anti-blemish
What does the product description say?
23% Pure Vitamin C (Ascorbic acid) Antioxidant activity, brightening(improve blemishes and brighten skin), reduce wrinkles and enhance elasticity.
niacinamide
0.25% -
0.45%
Irritation risk:
Concentration: Insufficient!
Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture.
The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production
allantoin
0.3% -
0.6%
Irritation risk:
Concentration: Insufficient!
Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated
Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Moisturizing | |
| Evens skin tone | |
| Anti-blemish |
Total Promises Fulfilled score:
75/100.
Buy now
Buy from Yesstyle $17.68 10% off for new customers!
Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 0
Potential irritants
ascorbic acid
23%
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
3-o-ethyl ascorbic acid
1.9% -
2.3%
Irritation risk:
Works for:
Evens skin tone,
Anti-oxidation,
Anti-aging
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Can help neutralize free radicals and help reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
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Comodogenic ingredients
No comodogenic ingredients detected
User reviews (0)
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74%
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Ingredients & concentrations
All ingredients
Key Actives
niacinamide
0.25% -
0.45%
Irritation risk:
Works for:
Anti-aging,
Anti-blemish,
Moisturizing,
Evens skin tone,
Reduces irritation,
Reduces redness,
Antibacterial,
Anti-inflammatory
Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture.
The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production
allantoin
0.3% -
0.6%
Irritation risk:
Works for:
Moisturizing,
Anti-inflammatory,
Reduces irritation,
Reduces redness,
Anti-blemish,
Exfoliation
Helps calm down inflammation in skin and can help reduce itching. Helps to repair the skin barrier and keep skin hydrated
Show more
Potential irritants
ascorbic acid
23%
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
3-o-ethyl ascorbic acid
1.9% -
2.3%
Irritation risk:
Works for:
Evens skin tone,
Anti-oxidation,
Anti-aging
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Can help neutralize free radicals and help reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
Show more
Comodogenic ingredients
We couldn't find any comodogenic ingredients in this product
All ingredients
ascorbic acid
23%
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
propanediol
5.7% -
6.9%
Irritation risk:
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
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Ingredient list view
Water, Ascorbic acid, Propanediol, Dimethicone, Tromethamine, Panthenol, 3-o-ethyl ascorbic acid, Squalane, Caffeine, Sodium chloride, Sodium hyaluronate, Sodium sulfite, Disodium edta, Glutathione, Adenosine, Acetyl glucosamine, Gardenia florida fruit extract, Allantoin, Dextrin, Tocotrienols, Tocopherol, Elaeis guineensis oil, Butylene glycol, Arginine, Niacinamide, Pentylene glycol, Alcohol denat., Helianthus annuus seed oil, Glycyrrhiza glabra root extract, Methyl trimethicone, Carthamus tinctorius seed oil, Camellia japonica seed oil, Daucus carota sativa root extract, Beta-carotene
Sources
- Dimethicone as a protective ingredient in topical medications
- Final Report on the Safety Assessment of Dimethicone Copolyol
- Safety Assessment of Tromethamine as Used in Cosmetics
- Skin moisturizing effects of panthenol-based formulations
- Safety Assessment of Panthenol, Pantothenic Acid, and Derivatives as Used in Cosmetics
- Antioxidant Ability and Stability Studies of 3-O-Ethyl Ascorbic Acid, a Cosmetic Tyrosinase Inhibitor
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- Glutathione as a skin whitening agent: Facts, myths, evidence and controversies
- Glutathione for skin lightening: a regnant myth or evidence-based verity?
- Glutathione for skin lightening for dermatologists and cosmetologists
- Evaluation of anti-wrinkle efficacy of adenosine-containing products using the FOITS technique
- The effect of N-acetyl-glucosamine on stratum corneum desquamation and water content in human skin
- Glucosamine: an ingredient with skin and other benefits
- Genomic expression changes induced by topical N-acetyl glucosamine in skin equivalent cultures in vitro
- Incorporation of D-(^H)glucosamine into normal and psoriatic epidermal glycoconjugates
- Reduction in the appearance of facial hyperpigmentation by topical N-acetyl glucosamine
- Allergic contact dermatitis from gardenia fruit
- VOLATILE CONSTITUENTS AND BIOLOGICAL ACTIVITIES OF GARDENIA JASMINOIDES
- Profile of wound healing process induced by allantoin
- Safety Assessment of Tocopherols and Tocotrienols as Used in Cosmetics
- Tocotrienol‐rich fraction attenuates UV‐induced inflammaging: A bench to bedside study
- Tocotrienols: Vitamin E beyond tocopherols
- Clinical evaluation of photoprotective effect by a topical antioxidants combination (tocopherols and tocotrienols)
- Tocotrienols: the unsaturated sidekick shifting new paradigms in vitamin E therapeutics
- Vitamin E in dermatology
- Vitamin E and Skin Health
- Genetic Architecture of Palm Oil Fatty Acid Composition in Cultivated Oil Palm (Elaeis guineensis Jacq.) Compared to Its Wild Relative E. oleifera (H.B.K) Cortés
- Nutrient composition of Nigerian palm kernel from the dura and tenera varieties of the oil palm (Elaeis guineensis)
- Niacinamide - mechanisms of action and its topical use in dermatology
- Gehring, W. (2004). Nicotinic acid/niacinamide and the skin. Journal of Cosmetic Dermatology, 3(2), 88–93. doi:10.1111/j.1473-2130.2004.00115.x
- Effect of Olive and Sunflower Seed Oil on the Adult Skin Barrier: Implications for Neonatal Skin Care
- Topically Applied Sunflower Seed Oil Prevents Invasive Bacterial Infections in Preterm Infants in Egypt
- Effect of topically applied lipids on surfactant-irritated skin