PRODUCT REVIEW
good (skin) days™ C’s The Day Serum
Works for:
based on ingredients and %- Evens skin tone
- Anti-oxidation
- Moisturizing
- Anti-aging
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Can it cause trouble?
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Cheaper alternatives
Product summary
What can the product work for?
Works for
Anti-aging
What does the product description say?
Not only is it formulated with 10% pure vitamin C (ascorbic acid), but it also contains skin brightening licorice root extract and niacinamide (vitamin B3) to diminish dullness, improve tone, and minimize the appearance of pores and fine lines.
adenosine
0.05% -
0.2%
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)
hydroxydecyl ubiquinone
0.1% -
0.3%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
An analogue of coenzyme Q10 that has a lower molecular weight, which can improve its ability to penetrate the skin. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen
ascorbic acid
3.2% -
4.8%
Irritation risk:
Concentration: Insufficient!
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
Evens skin tone
What does the product description say?
Not only is it formulated with 10% pure vitamin C (ascorbic acid), but it also contains skin brightening licorice root extract and niacinamide (vitamin B3) to diminish dullness, improve tone, and minimize the appearance of pores and fine lines.
arbutin
0.35% -
0.8%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
Beta-arbutin. Can help to reduce hyperpigmentation and has an anti-oxidant effect when used in high enough concentration. Is less effective compared to alpha-arbutin
glycyrrhiza glabra root extract
0.95% -
1.4%
Irritation risk:
Concentration: Effectiveness:
LOW
A plant extract that can help lighten the skin and calm down inflammation. Might be helpful in neutralizing free radicals
ascorbic acid
3.2% -
4.8%
Irritation risk:
Concentration: Insufficient!
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
Moisturizing
glycerin
2.2% -
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
hydroxydecyl ubiquinone
0.1% -
0.3%
Irritation risk:
Concentration: Effectiveness: HIGH
An analogue of coenzyme Q10 that has a lower molecular weight, which can improve its ability to penetrate the skin. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen
adenosine
0.05% -
0.2%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
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)
Show more
Anti-oxidation
hydroxydecyl ubiquinone
0.1% -
0.3%
Irritation risk:
Concentration: Effectiveness: HIGH
An analogue of coenzyme Q10 that has a lower molecular weight, which can improve its ability to penetrate the skin. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen
arbutin
0.35% -
0.8%
Irritation risk:
Concentration: Effectiveness:
MEDIUM
Beta-arbutin. Can help to reduce hyperpigmentation and has an anti-oxidant effect when used in high enough concentration. Is less effective compared to alpha-arbutin
adenosine
0.05% -
0.2%
Irritation risk:
Concentration: Effectiveness:
LOW
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)
Show more
Honesty check
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Evens skin tone | |
| Anti-aging |
Total Promises Fulfilled score:
75/100.
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Can it cause trouble?
- Overall product irritation risk
- Acne & comedogenic risk ingredients: 1
Potential irritants
ascorbic acid
3.2% -
4.8%
Irritation risk:
Works for:
Evens skin tone,
Anti-oxidation,
Anti-aging
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
Comodogenic ingredients
User reviews (0)
Similar products & dupes
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| WIMJ similarity score |
91%
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91%
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88%
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77%
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| Irritancy | IRRITANCY
MEDIUM
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LOW
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LOW
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MEDIUM
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MEDIUM
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MEDIUM
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LOW
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LOW
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HIGH
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HIGH
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MEDIUM
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MEDIUM
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Ingredients & concentrations
All ingredients
Key Actives
niacinamide
0.9% -
1.3%
Irritation risk:
Works for:
Moisturizing,
Anti-aging,
Anti-blemish,
Evens skin tone,
Reduces irritation,
Anti-inflammatory,
Antibacterial,
Reduces redness
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
ascorbic acid
3.2% -
4.8%
Irritation risk:
Works for:
Evens skin tone,
Anti-oxidation,
Anti-aging
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
Potential irritants
ascorbic acid
3.2% -
4.8%
Irritation risk:
Works for:
Evens skin tone,
Anti-oxidation,
Anti-aging
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
Comodogenic ingredients
All ingredients
butylene glycol
4.7% -
7.1%
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
ascorbic acid
3.2% -
4.8%
Irritation risk:
Works for:
Evens skin tone,
Anti-oxidation,
Anti-aging
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
Water, Butylene glycol, Ascorbic acid, Glycerin, 1,2-hexanediol, Sodium bicarbonate, Myrciaria dubia fruit extract, Glycyrrhiza glabra root extract, Niacinamide, Magnesium ascorbyl phosphate, Arbutin, Tocopheryl acetate, Coptis japonica extract, Panax ginseng berry extract, Crocus sativus flower extract, Tuber magnatum extract, Hibiscus sabdariffa flower extract, Theobroma cacao extract, Glycereth-25 pca isostearate, Hydroxydecyl ubiquinone, Sodium metabisulfite, Xanthan gum, Ethylhexylglycerin, Adenosine, Dextrin, Caprylic/capric triglyceride, Cetyl ethylhexanoate, Hydrogenated lecithin
Sources
- Glycerol and the skin: holistic approach to its origin and functions
- The influence of alkane chain length on the skin irritation potential of 1,2-alkanediols
- Antioxidant and Associated Capacities of Camu Camu (Myrciaria dubia): A Systematic Review
- 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
- Stability, transdermal penetration, and cutaneous effects of ascorbic acid and its derivatives
- Topical L-ascorbic acid: percutaneous absorption studies
- Arbutin - Commentaty
- TOPICAL TREATMENT OF MELASMA
- Anthocyanin-rich extract from Hibiscus sabdariffa calyx counteracts UVC-caused impairments in rats
- Hibiscus sabdariffa L. – A phytochemical and pharmacological review
- Liposome-containing Hibiscus sabdariffa calyx extract formulations with increased antioxidant activity, improved dermal penetration and reduced dermal toxicity
- Allergic contact dermatitis to hydroxydecyl ubiquinone (idebenone) following application of anti-ageing cosmetic cream
- Blackwell Publishing, Ltd. Clinical efficacy assessment in photodamaged skin of 0.5% and 1.0% idebenone
- Final report on the safety assessment of sodium sulfite, potassium sulfite, ammonium sulfite, sodium bisulfite, ammonium bisulfite, sodium metabisulfite and potassium metabisulfite