Works for:
based on ingredients and %- Anti-aging
- Moisturizing
- Anti-oxidation
- Evens skin tone
Can it cause trouble?
- Irritation risk: high
- Comedogenic risk ingredients: 1
Key actives
Product Summary
"PCA SKIN - C-Quench Antioxidant Serum" is effective for: Evens skin tone
This product could be helpful for: Anti-aging and Moisturizing, but its actives are not the most effective or are not well-studied.
Ingredient callouts
- This product also contains Vitamin C (Ascorbic Acid) 3.80% - 5.60% It can be helpful in stimulating collagen production, neutralizing free radicals in skin and improving pigmentation marks. We recommend to use up this product quickly after opening: Ascorbic Acid degrades fast when it gets in contact with air and light. The moment the product turns orange, it is a sign that a significant share of the vitamin C in it is no longer effective.
- Humectants (sodium hyaluronate 0.10% - 0.35%, glycerin 1.80% - 2.70% and alanine 0.05% - 0.25%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
Price
The product retails for 120.00$ in the United States.
For a detailed price comparison: click here.
Anti-oxidation
This product contains antioxidants (glutathione, resveratrol, tocotrienols) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).
The following ingredients - squalene also can have an antioxidant effect, but there is less evidence to confirm their effectiveness in skin.
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
A type of vitamin E that is more powerful in neutralizing free radicals compared to its other forms
Helps neutralize free radicals in skin and might help reduce fine lines and wrinkles, as well as even out the skin tone
An oil that is naturally part of skin sebum that helps to soften its upper layer, reduce water loss and neutralize free radicals. It might be comedogenic. Avoid applying large concentrations (or pure oil) before sun exposure as oxidized squalene can clog pores and lead to skin irritation. Today squalene is mostly derived from vegetable oils or synthetized by yeast
An emollient. Can be helpful for restoring skin barrier function.
Can help neutralize free radicals in skin. Preliminary studies show that it can be more effective than coenzyme Q10 but studies on effective concentration for topical applications are lacking
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
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
Evens skin tone
This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: glutathione
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: alanine, resveratrol.
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.
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
An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking
Helps neutralize free radicals in skin and might help reduce fine lines and wrinkles, as well as even out the 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
Anti-aging
What does the product description say?
Key Benefits Multiple antioxidants and botanicals offer superior protection from aging UV rays and other external offenders Vitamins C and E provide additional support against environmental pollutants Who is this for? Ideal for all skin types.
Source: SkincareRX
This product contains resveratrol, serine, tocotrienols. These ingredients might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.
A type of vitamin E that is more powerful in neutralizing free radicals compared to its other forms
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
Helps neutralize free radicals in skin and might help reduce fine lines and wrinkles, as well as even out the 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
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
Moisturizing
What does the product description say?
This product also enlists a host of powerful anti-inflammatory agents to soothe the skin while increasing hydration and adding support to the extracellular matrix.
Source: Skinstore
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:
alanine, glycerin.
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, squalene.
Lipids that work as an emollient and can be helpful in repairing skin barrier function
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
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.
An oil that is naturally part of skin sebum that helps to soften its upper layer, reduce water loss and neutralize free radicals. It might be comedogenic. Avoid applying large concentrations (or pure oil) before sun exposure as oxidized squalene can clog pores and lead to skin irritation. Today squalene is mostly derived from vegetable oils or synthetized by yeast
An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking
An emollient. Can be helpful for restoring skin barrier function.
Helps attract water to the upper layer of the skin. Is sometimes referred to as "natural" hyaluronic acid (even though hyaluronic acid is not unnatural and is present in human skin)
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
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
Helps preserve products and creates a nice product texture
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Moisturizing |
Total Promises Fulfilled score: 75/100.
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Potential irritants
Comedogenic ingredients
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| Product | Similarity | Price | Irritancy |
|---|---|---|---|
 PCA SKIN C-Quench Antioxidant Serum | Current | $120.00 | |
Filorga Serums C-Recover Radiance Boosting Concentrate | 89% | $37.65 | |
COSRX Advanced The Vitamin C 23 Serum | 87% | $25.00 | |
 Trish McEvoy Vitamin C Serum | 87% | $125.00 | |
 OARS + ALPS Wake Up Face Serum | 86% | $48.00 | |
 Dime Beauty Co Hyper Glow Serum | 86% | $28.00 |
Key Actives
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
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
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
Helps neutralize free radicals in skin and might help reduce fine lines and wrinkles, as well as even out the skin tone
An emollient. Can be helpful for restoring skin barrier function.
A type of vitamin E that is more powerful in neutralizing free radicals compared to its other forms
An oil that is naturally part of skin sebum that helps to soften its upper layer, reduce water loss and neutralize free radicals. It might be comedogenic. Avoid applying large concentrations (or pure oil) before sun exposure as oxidized squalene can clog pores and lead to skin irritation. Today squalene is mostly derived from vegetable oils or synthetized by yeast
An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
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 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.
Lipids that work as an emollient and can be helpful in repairing skin barrier function
Helps attract water to the upper layer of the skin. Is sometimes referred to as "natural" hyaluronic acid (even though hyaluronic acid is not unnatural and is present in human skin)
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
Potential irritants
A plant extract that can help calm down inflammation in skin. Can, however, itself be irritating
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
Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties
An essentil oil from orange peel. Potential allergen and can be irritating
A plant oil with high content of volatile compounds that, especially when exposed to air, can cause allergic reactions and irritate the skin
A gelling agent that thickens the product consistency and leaves the skin with a velvety finish
Helps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve products
An emollient. Can be helpful for restoring skin barrier function.
Lipids that work as an emollient and can be helpful in repairing skin barrier function
Helps attract water to the upper layer of the skin. Is sometimes referred to as "natural" hyaluronic acid (even though hyaluronic acid is not unnatural and is present in human skin)
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
Helps neutralize free radicals in skin and might help reduce fine lines and wrinkles, as well as even out the skin tone
Helps preserve products and creates a nice product texture
Comedogenic ingredients
An oil that is naturally part of skin sebum that helps to soften its upper layer, reduce water loss and neutralize free radicals. It might be comedogenic. Avoid applying large concentrations (or pure oil) before sun exposure as oxidized squalene can clog pores and lead to skin irritation. Today squalene is mostly derived from vegetable oils or synthetized by yeast
All ingredients
A plant extract that can help calm down inflammation in skin. Can, however, itself be irritating
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
Can be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial properties
A gelling agent that thickens the product consistency and leaves the skin with a velvety finish
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 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.
Used to stabilize the product formulation and can help absorb oil
Helps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve products
An emollient. Can be helpful for restoring skin barrier function.
Lipids that work as an emollient and can be helpful in repairing skin barrier function
Helps attract water to the upper layer of the skin. Is sometimes referred to as "natural" hyaluronic acid (even though hyaluronic acid is not unnatural and is present in human skin)
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
Helps neutralize free radicals in skin and might help reduce fine lines and wrinkles, as well as even out the skin tone
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
A type of vitamin E that is more powerful in neutralizing free radicals compared to its other forms
An essentil oil from orange peel. Potential allergen and can be irritating
A plant oil with high content of volatile compounds that, especially when exposed to air, can cause allergic reactions and irritate the skin
An oil that is naturally part of skin sebum that helps to soften its upper layer, reduce water loss and neutralize free radicals. It might be comedogenic. Avoid applying large concentrations (or pure oil) before sun exposure as oxidized squalene can clog pores and lead to skin irritation. Today squalene is mostly derived from vegetable oils or synthetized by yeast
Helps preserve products and creates a nice product texture
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking
An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles
Can help neutralize free radicals in skin. Preliminary studies show that it can be more effective than coenzyme Q10 but studies on effective concentration for topical applications are lacking
Ingredient list view
Water, Hamamelis virginiana water, Ascorbic acid, Alcohol, Hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer, Glycerin, Squalane, Maltodextrin, Sodium citrate, Ribes nigrum seed oil, Pseudoalteromonas ferment extract, Phytosterols, Cassia angustifolia seed polysaccharide, Glutathione, Resveratrol, Xanthan gum, Tocopherol, Tocotrienols, Citrus aurantium dulcis peel oil, Citrus grandis peel oil, Oryza sativa bran wax, Squalene, Caprylyl glycol, Syringa vulgaris leaf cell culture extract, Ethylhexylglycerin, Sodium hyaluronate, Alanine, Proline, Serine, Sodium phosphate, Sodium hydroxide, Ergothioneine
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- 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
- Skin permeation and antioxidant efficacy of topically applied resveratrol
- Chemoprevention of skin cancer by grape constituent resveratrol: relevance to human disease?
- Evaluation of efficacy and tolerance of a nighttime topical antioxidant containing resveratrol, baicalin, and vitamin e for treatment of mild to moderately photodamaged skin
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- Anti-aging properties of resveratrol: review and report of a potent new antioxidant skin care formulation
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- Tocotrienol‐rich fraction attenuates UV‐induced inflammaging: A bench to bedside study
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- Clinical evaluation of photoprotective effect by a topical antioxidants combination (tocopherols and tocotrienols)
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- Biological and Pharmacological Activities of Squalene and Related Compounds: Potential Uses in Cosmetic Dermatology
- Enhanced comedo formation in rabbit ear skin by squalene and oleic acid peroxides
- Hyaluronic acid: A key molecule in skin aging
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- Combination of amino acids reduces pigmentation in B16F0 melanoma cells
- Topical palmitoyl pentapeptide provides improvement in photoaged human facial skin
- A comparison of the relative antioxidant potency of L‐ergothioneine and idebenone
- l-Ergothioneine Protects Skin Cells against UV-Induced Damage—A Preliminary Study