marie veronique

marie veronique C-Therapy Serum

Name: marie veronique - C-Therapy Serum
Brand: marie veronique

Efficacy68/100IrritancyMedium

See all ingredients

Works for

Anti-aging

Tetrahexyldecyl ascorbate, 3-glyceryl ascorbate + 8 more

Works well

What the product description says

“This formula also includes antioxidants glutathione and alpha-lipoic acid that help to protect the mitochondria, resulting in improved skin brightness and anti-aging benefits.”

Source: Credo Beauty

This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains tetrahexyldecyl ascorbate.

These ingredients in the product can also be helpful, even though there is less evidence for their effectiveness: 3-glyceryl ascorbate, ferulic acid.

Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.

Tetrahexyldecyl ascorbateKey activeEffect: HighBeing 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.~4.3–6.5%

3-glyceryl ascorbateKey activeEffect: MediumA moisturizing vitamin C derivative. It is considered to be one of the most stable ones. It is effective in neutralizing free radicals and can help to even out the skin tone if used in high enough concentration~1.5–2.2%

Ferulic acidKey activeEffect: MediumA 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%~0.85–1.3%

Camellia sinensis leaf extractEffect: LowCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~22–34%

Beta-glucanEffect: LowHelps attract water to the upper layer of the skin, calm down inflammation and irritation, restore the barrier function and support wound healing. It can be helpful in reducing fine lines and wrinkles~0.5–1.15%

Sodium salicylateEffect: LowThe salt of salicylic acid. Helps exfoliate the upper layer of the skin. Can also work to preserve cosmetic products~0.25–0.5%

Thioctic acidEffect: Low~0.1–0.45%

Magnesium ascorbyl phosphateEffect: Low, below effective doseA derivative of vitamin C that is more stable, but less bioavailable than the pure form of vitamin C. It does not penetrate the skin well, but has been shown to convert to pure vitamin C once in skin. It can be helpful in stimulating collagen production and lightening the skin tone, but the required concentration is likely to be very high~1.3–1.9%

Sodium ascorbyl phosphateEffect: Low, below effective doseA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C~1.1–1.6%

TocopherolEffect: Low, below effective dosePure 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~0.8–1.25%

Evens skin tone

Tetrahexyldecyl ascorbate, 3-glyceryl ascorbate + 4 more

Works well

What the product description says

“Why We Love It: Marie Veronique C-Therapy Serum contains 4 powerful derivatives of Vitamin C that are better suited to sensitive skin than I-ascorbic acid, yet deliver the same results: collagen production, antioxidant protection, and skin brightening.”

Source: Credo Beauty

This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: 3-glyceryl ascorbate, glutathione, tetrahexyldecyl ascorbate

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: ferulic acid.

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.

3-glyceryl ascorbateKey activeEffect: HighA moisturizing vitamin C derivative. It is considered to be one of the most stable ones. It is effective in neutralizing free radicals and can help to even out the skin tone if used in high enough concentration~1.5–2.2%

GlutathioneKey activeEffect: HighA 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~0.15–0.55%

Moisturizing

Glycerin, Simmondsia chinensis seed oil + 16 more

Works

What the product description says

“Moisturizing, Improves water barrier protection.”

Source: Marie Veronique

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: 3-glyceryl ascorbate, 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: helianthus annuus seed oil, simmondsia chinensis seed oil.

GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~2.8–4.1%

Simmondsia chinensis seed oilKey active· Emollient, OcclusiveEffect: HighSoftens the upper layer of skin and helps restore the healthy skin barrier. Has shown to help calm down inflammation in skin. It is a stable oil, meaning that it retains its properties even when exposed to air.~2.4–3.5%

Brassica oleracea italica seed oilKey active· EmollientEffect: MediumA plant seed oil that consists mainly of erucic acid and used to help soften the upper layer of the skin. This fatty acid can enhance penetration of other ingredients into the skin but it is not a good moisturizer on its own~1.7–2.5%

Vitis vinifera seed oilKey active· EmollientEffect: HighA great emollient that can also have anti-oxidant properties~1.6–2.3%

3-glyceryl ascorbateKey active· HumectantEffect: HighA moisturizing vitamin C derivative. It is considered to be one of the most stable ones. It is effective in neutralizing free radicals and can help to even out the skin tone if used in high enough concentration~1.5–2.2%

LactobacillusKey activeEffect: HighA non-living ingredient made by fermentation with the bacteria Lactobacillus. It can help attract water to the upper layer of the skin and might help reduce inflammation~1.4–2.1%

Helianthus annuus seed oilKey active· Emollient, OcclusiveEffect: HighA 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~0.85–1.3%

Cocos nucifera fruit extractKey active· EmollientEffect: HighAn emollient. Found to be as effective as a moisturizer for dry skin as mineral oil. Could be comedogenic~0.55–1.35%

Beta-glucanKey activeEffect: HighHelps attract water to the upper layer of the skin, calm down inflammation and irritation, restore the barrier function and support wound healing. It can be helpful in reducing fine lines and wrinkles~0.5–1.15%

Ganoderma lucidum extractKey activeEffect: HighHelps attract water to the upper layer of the skin~0.45–1.1%

Beta-sitosterolKey active· EmollientEffect: HighA phytosterol that can support skin's barrier function and help the skin stay hydrated~0.35–0.8%

SqualeneKey active· Emollient, OcclusiveEffect: HighAn 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~0.3–0.75%

Glycine soja oilKey active· EmollientEffect: HighA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.~0.1–0.4%

Behenyl alcohol· Emollient, OcclusiveEffect: LowNon-drying alcohol that helps water and oil mix together. Also serves as an emollient~0.35–0.85%

LecithinEffect: Low, below effective doseUsed mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin~0.3–0.75%

Anti-blemish

Sodium ascorbyl phosphate ~1.1–1.6%

Under-dosed

What the product description says

“Reducing frequency and severity of breakouts by clearing congested pores.”

Source: Marie Veronique

Effective ingredients missing or their concentration is too low.

Sodium ascorbyl phosphateUnder-dosedA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C~1.1–1.6%

Anti-oxidation

Side benefit · Camellia sinensis leaf extract, Tetrahexyldecyl ascorbate + 10 more

Works well

This product contains antioxidants (3-glyceryl ascorbate, ferulic acid, glutathione, tetrahexyldecyl ascorbate, thioctic acid) 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 - camellia sinensis leaf extract, squalene also can have an antioxidant effect, but there is less evidence to confirm their effectiveness in skin.

Camellia sinensis leaf extractKey activeEffect: MediumCan contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation~22–34%

Ferulic acidKey activeEffect: HighA 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%~0.85–1.3%

SqualeneKey activeEffect: MediumAn 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~0.3–0.75%

Thioctic acidKey activeEffect: High~0.1–0.45%

Vitis vinifera seed oilEffect: LowA great emollient that can also have anti-oxidant properties~1.6–2.3%

TocopherolUnder-dosedPure 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~0.8–1.25%

Can it cause trouble?

Irritancy

15 flagged ingredients

Medium risk

We flagged 15 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.

IngredientFunctionIrritationEst. amount

3-glyceryl ascorbateA moisturizing vitamin C derivative. It is considered to be one of the most stable ones. It is effective in neutralizing free radicals and can help to even out the skin tone if used in high enough concentrationHigh~1.5–2.2%est.

Curcuma longa root extractA 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 irritantHigh~0.05–0.3%est.

Tetrahexyldecyl ascorbateBeing 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.Medium~4.3–6.5%est.

Simmondsia chinensis seed oilSoftens the upper layer of skin and helps restore the healthy skin barrier. Has shown to help calm down inflammation in skin. It is a stable oil, meaning that it retains its properties even when exposed to air.Medium~2.4–3.5%est.

Brassica oleracea italica seed oilA plant seed oil that consists mainly of erucic acid and used to help soften the upper layer of the skin. This fatty acid can enhance penetration of other ingredients into the skin but it is not a good moisturizer on its ownMedium~1.7–2.5%est.

Vitis vinifera seed oilA great emollient that can also have anti-oxidant propertiesMedium~1.6–2.3%est.

Magnesium ascorbyl phosphateA derivative of vitamin C that is more stable, but less bioavailable than the pure form of vitamin C. It does not penetrate the skin well, but has been shown to convert to pure vitamin C once in skin. It can be helpful in stimulating collagen production and lightening the skin tone, but the required concentration is likely to be very highMedium~1.3–1.9%est.

Sodium ascorbyl phosphateA stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin CMedium~1.1–1.6%est.

Leuconostoc/radish root ferment filtrateA preservative that comes from radishes fermented by a bacteria. New research suggests that the preservation properties in the ingredient come from an ammonium salt that is not present naturally in radish root but used in its cultivation. Is problematic because the exact amount of the preservative agents is difficult to determineMedium~0.85–1.25%est.

Ganoderma lucidum extractHelps attract water to the upper layer of the skinMedium~0.45–1.1%est.

Sodium salicylateThe salt of salicylic acid. Helps exfoliate the upper layer of the skin. Can also work to preserve cosmetic productsMedium~0.25–0.5%est.

GlutathioneA 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 skinMedium~0.15–0.55%est.

Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.Medium~0.1–0.4%est.

Potassium sorbateA preservativeMedium~0.05–0.25%est.

Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.05–0.1%est.

Comedogenic

3 ingredients rated 2 or more on the 0–5 pore-clogging scale

3 flagged

These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.

IngredientFunctionRatingEst. amount

Cocos nucifera fruit extractAn emollient. Found to be as effective as a moisturizer for dry skin as mineral oil. Could be comedogenic3/5~0.55–1.35%est.

SqualeneAn 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 yeast2/5~0.3–0.75%est.

Glycine soja oilA good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.2/5~0.1–0.4%est.

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Ingredients

Filter by role to see what each ingredient is doing.

Camellia sinensis leaf extract~22–34%

Key active

Irritation risk: Low

Works for

Anti-oxidationAntibacterialAnti-agingMoisturizingAnti-blemishEvens skin tone

Can contain potent anti-oxidant compounds (abbreviated ECG, GCG, EGC, and EGCG) that might help protect the skin from free radicals. Can help calm down inflammation and has some anti-bacterial properties. Unfortunately, these antioxidants are unstable and lose their effectiveness very quickly in products. The concentration of the antioxidant compounds in the extract also tends to be low to be effective in topical formulation

More about Camellia sinensis leaf extract

Water~11–17%

Formula

Irritation risk: Low

Plain old water

More about Water

Tetrahexyldecyl ascorbate~4.3–6.5%

Key activeIrritant · medium

Irritation risk: Medium

Works for

Anti-oxidationEvens skin toneAnti-aging

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.

More about Tetrahexyldecyl ascorbate

Glycerin~2.8–4.1%

Key active

Irritation risk: Low

Works for

Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin

Simmondsia chinensis seed oil~2.4–3.5%

Key activeIrritant · medium

Irritation risk: Medium

Works for

Moisturizing

Softens the upper layer of skin and helps restore the healthy skin barrier. Has shown to help calm down inflammation in skin. It is a stable oil, meaning that it retains its properties even when exposed to air.

More about Simmondsia chinensis seed oil

Brassica oleracea italica seed oil~1.7–2.5%

Key activeIrritant · medium

Irritation risk: Medium

Works for

Moisturizing

A plant seed oil that consists mainly of erucic acid and used to help soften the upper layer of the skin. This fatty acid can enhance penetration of other ingredients into the skin but it is not a good moisturizer on its own

More about Brassica oleracea italica seed oil

Vitis vinifera seed oil~1.6–2.3%

Key activeIrritant · medium

Irritation risk: Medium

Works for

MoisturizingAnti-oxidation

A great emollient that can also have anti-oxidant properties

More about Vitis vinifera seed oil

Lactobacillus~1.4–2.1%

Key active

Irritation risk: Low

Works for

Moisturizing

A non-living ingredient made by fermentation with the bacteria Lactobacillus. It can help attract water to the upper layer of the skin and might help reduce inflammation

More about Lactobacillus

3-glyceryl ascorbate~1.5–2.2%

Key activeIrritant · high

Irritation risk: High

Works for

MoisturizingEvens skin toneAnti-oxidationAnti-aging

A moisturizing vitamin C derivative. It is considered to be one of the most stable ones. It is effective in neutralizing free radicals and can help to even out the skin tone if used in high enough concentration

More about 3-glyceryl ascorbate

Magnesium ascorbyl phosphate~1.3–1.9%

Irritant · medium

Irritation risk: Medium

Works for

Evens skin toneAnti-agingAnti-oxidation

A derivative of vitamin C that is more stable, but less bioavailable than the pure form of vitamin C. It does not penetrate the skin well, but has been shown to convert to pure vitamin C once in skin. It can be helpful in stimulating collagen production and lightening the skin tone, but the required concentration is likely to be very high

More about Magnesium ascorbyl phosphate

Sodium ascorbyl phosphate~1.1–1.6%

Under-dosedIrritant · medium

Irritation risk: Medium

Works for

Anti-blemishAnti-oxidationAnti-aging

A stable derivative of vitamin C. It is oil-soluble which means it is more likely to penetrate the skin compared to the pure form of vitamin C (which is water-soluble), but it is less bio-available and is way less effective in stimulating collagen and reducing wrinkles compared to the pure form of vitamin C (L-ascorbic acid) and its other derivatives (for example, magnesium ascorbyl phosphate). At the same time, this vitamin C derivative has been shown in studies to be effective in reducing acne, blemishes and clogged pores. It is less irritating then the pure form of vitamin C

More about Sodium ascorbyl phosphate

Leuconostoc/radish root ferment filtrate~0.85–1.25%

Irritant · medium

Irritation risk: Medium

A preservative that comes from radishes fermented by a bacteria. New research suggests that the preservation properties in the ingredient come from an ammonium salt that is not present naturally in radish root but used in its cultivation. Is problematic because the exact amount of the preservative agents is difficult to determine

More about Leuconostoc/radish root ferment filtrate

Helianthus annuus seed oil~0.85–1.3%

Key active

Irritation risk: Low

Works for

Moisturizing

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

More about Helianthus annuus seed oil

Ferulic acid~0.85–1.3%

Key active

Irritation risk: Low

Works for

Anti-oxidationAnti-agingEvens skin toneAnti-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%

More about Ferulic acid

Cocos nucifera fruit extract~0.55–1.35%

Key activeComedogenic 3/5

Irritation risk: Low
Comedogenicity: 3/5

Works for

Moisturizing

An emollient. Found to be as effective as a moisturizer for dry skin as mineral oil. Could be comedogenic

More about Cocos nucifera fruit extract

Tocopherol~0.8–1.25%

Under-dosed

Irritation risk: Low

Works for

Anti-oxidationAnti-inflammatoryAnti-agingMoisturizing

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

More about Tocopherol

Beta-glucan~0.5–1.15%

Key active

Irritation risk: Low

Works for

MoisturizingAnti-inflammatoryReduces irritationAnti-blemishAnti-oxidationAnti-aging

Helps attract water to the upper layer of the skin, calm down inflammation and irritation, restore the barrier function and support wound healing. It can be helpful in reducing fine lines and wrinkles

More about Beta-glucan

Ganoderma lucidum extract~0.45–1.1%

Key activeIrritant · medium

Irritation risk: Medium

Works for

Moisturizing

Helps attract water to the upper layer of the skin

More about Ganoderma lucidum extract

Sodium salicylate~0.25–0.5%

Irritant · medium

Irritation risk: Medium

Works for

Anti-aging

The salt of salicylic acid. Helps exfoliate the upper layer of the skin. Can also work to preserve cosmetic products

More about Sodium salicylate

Beta-sitosterol~0.35–0.8%

Key active

Irritation risk: Low

Works for

Moisturizing

A phytosterol that can support skin's barrier function and help the skin stay hydrated

More about Beta-sitosterol

Cetearyl olivate~0.35–0.75%

Formula

Irritation risk: Low

Works for

Cleansing

Helps oil and water mix together

More about Cetearyl olivate

Dicrateria rotunda oil~0.2–0.8%

Formula

Irritation risk: Low

More about Dicrateria rotunda oil

Silybum marianum seed extract~0.2–0.7%

Formula

Irritation risk: Low

More about Silybum marianum seed extract

Behenyl alcohol~0.35–0.85%

Formula

Irritation risk: Low

Works for

Moisturizing

Non-drying alcohol that helps water and oil mix together. Also serves as an emollient

More about Behenyl alcohol

Sorbitan olivate~0.3–0.75%

Formula

Irritation risk: Low

Works for

Cleansing

Helps oil and water mix together

More about Sorbitan olivate

Xanthan gum~0.2–0.75%

Formula

Irritation risk: Low

Works for

Cleansing

Used to create a thicker product consistency

More about Xanthan gum

Squalene~0.3–0.75%

Key activeComedogenic 2/5

Irritation risk: Low
Comedogenicity: 2/5

Works for

MoisturizingAnti-oxidation

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

More about Squalene

Lecithin~0.3–0.75%

Formula

Irritation risk: Low

Works for

CleansingMoisturizing

Used mostly for creating emulsions - helping oil and water mix together. Helps soften the upper layer of the skin

More about Lecithin

Glutathione~0.15–0.55%

Key activeIrritant · medium

Irritation risk: Medium

Works for

Anti-oxidationMoisturizingEvens skin tone

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

More about Glutathione

Thioctic acid~0.1–0.45%

Key active

Irritation risk: Low

Works for

Anti-oxidationAnti-aging

More about Thioctic acid

Curcuma longa root extract~0.05–0.3%

Irritant · high

Irritation risk: High

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

More about Curcuma longa root extract

Glycine soja oil~0.1–0.4%

Key activeComedogenic 2/5Irritant · medium

Irritation risk: Medium
Comedogenicity: 2/5

Works for

Moisturizing

A good emollient that helps soften the skin and helps repair its barrier function. It can clog pores if used in high concentrations.

More about Glycine soja oil

Propanediol~0.05–0.25%

Formula

Irritation risk: Low

Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin

More about Propanediol

Potassium sorbate~0.05–0.25%

Irritant · medium

Irritation risk: Medium

A preservative

More about Potassium sorbate

Citric acid~0.05–0.1%

Irritant · medium

Irritation risk: Medium

Can work as an exfoliant but is typically used to adjust the product pH

More about Citric acid

Ingredient list view

Camellia sinensis leaf extract, Water, Tetrahexyldecyl ascorbate, Glycerin, Simmondsia chinensis seed oil, Brassica oleracea italica seed oil, Vitis vinifera seed oil, Lactobacillus, 3-glyceryl ascorbate, Magnesium ascorbyl phosphate, Sodium ascorbyl phosphate, Leuconostoc/radish root ferment filtrate, Helianthus annuus seed oil, Ferulic acid, Cocos nucifera fruit extract, Tocopherol, Beta-glucan, Ganoderma lucidum extract, Sodium salicylate, Beta-sitosterol, Cetearyl olivate, Dicrateria rotunda oil, Silybum marianum seed extract, Behenyl alcohol, Sorbitan olivate, Xanthan gum, Squalene, Lecithin, Glutathione, Thioctic acid, Curcuma longa root extract, Glycine soja oil, Propanediol, Potassium sorbate, Citric acid

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Marie Veronique

$120.00

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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
	marie veroniqueC-Therapy SerumYOUR PRODUCT	Paula's choiceResist - Anti-Aging Super Antioxidant Concentrate Serum	colibri skincareVitamin C 20 Booster	KYLIE SKINVitamin C Serum
Match	—	45%	45%	45%
Price	$120.00	—	$24.64−$95.36	$35.80−$84.20
Shared key ingredients	—	7 of 19	3 of 19	3 of 19
Key difference	—	Palmitoyl Tripeptide-5	3-O-Ethyl Ascorbic Acid	Panthenol
Irritancy	Medium	Low	Low	Low
Drying alcohol	—	—	—	—
	View product	Shop	Shop	Shop

More alternatives: Glow Jar 8% AM Vitamin C Serum Peter Thomas Roth Potent-C™ Vitamin C Targeted Spot Brightener

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Product summary

"marie veronique - C-Therapy Serum" is effective for: Anti-inflammatory, Anti-aging and Evens skin tone

This product could be helpful for: Moisturizing, but its actives are not the most effective or are not well-studied.

Ingredient callouts

Humectants (3-glyceryl ascorbate 1.50% - 2.20% and glycerin 2.80% - 4.10%). 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.

Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 43 studies and safety reviews.

1
Double-blind, half-face study comparing topical vitamin C and vehicle for rejuvenation of photodamagencbi.nlm.nih.gov
2
Application of tetra-isopalmitoyl ascorbic acid in cosmetic formulations: Stability studies and in vivo efficacysciencedirect.com
3
Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
4
The Enigma of Bioactivity and Toxicity of Botanical Oils for Skin Carencbi.nlm.nih.gov
5
Safety and Efficacy of Bis-Glyceryl Ascorbate (Amitose DGA) to Prevent Hand-Foot Skin Reaction in Patients With Renal Cell Carcinoma Receiving Sunitinib Therapy: Protocol for a Phase I/II, Uncontrolled, Single-Arm, Open-Label Trialresearchprotocols.org
6
3‐O‐Glyceryl‐2‐O‐hexyl ascorbate suppresses melanogenesis by interfering with intracellular melanosome transport and suppressing tyrosinase protein synthesisonlinelibrary.wiley.com
7
3‐O‐Laurylglyceryl ascorbate improves the development of sensitive skin through the reduction of oxidative stressonlinelibrary.wiley.com
8
Stability, transdermal penetration, and cutaneous effects of ascorbic acid and its derivativesncbi.nlm.nih.gov
9
Topical L-ascorbic acid: percutaneous absorption studiesncbi.nlm.nih.gov
10
Sodium ascorbyl phosphate shows in vitro and in vivo efficacy in the prevention and treatment of acne vulgarisncbi.nlm.nih.gov
11
Sodium ascorbyl phosphate in topical microemulsionssciencedirect.com
12
Final report of the safety assessment of L-Ascorbic Acid, Calcium Ascorbate, Magnesium Ascorbate, Magnesium Ascorbyl Phosphate, Sodium Ascorbate, and Sodium Ascorbyl Phosphate as used in cosmeticseuropepmc.org
13
Regulation of collagen synthesis in human dermal fibroblasts by the sodium and magnesium salts of ascorbyl-2-phosphatekarger.com
14
Comparison of clinical efficacies of sodium ascorbyl phosphate, retinol and their combination in acne treatmentonlinelibrary.wiley.com
15
Application of l-ascorbic acid and its derivatives (sodium ascorbyl phosphate and magnesium ascorbyl phosphate) in topical cosmetic formulations: stability studiesinis.iaea.org
16
Sodium L-ascorbyl-2-phosphate 5% lotion for the treatment of acne vulgaris: a randomized, double-blind, controlled trialonlinelibrary.wiley.com
17
Effect of Olive and Sunflower Seed Oil on the Adult Skin Barrier: Implications for Neonatal Skin Careonlinelibrary.wiley.com
18
Topically Applied Sunflower Seed Oil Prevents Invasive Bacterial Infections in Preterm Infants in Egyptjournals.lww.com
19
Effect of topically applied lipids on surfactant-irritated skinonlinelibrary.wiley.com
20
Impact of topical oils on the skin barrier: possible implications for neonatal health in developing countriesonlinelibrary.wiley.com
21
Ferulic Acid: Therapeutic Potential Through Its Antioxidant Propertyncbi.nlm.nih.gov
22
Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skinncbi.nlm.nih.gov
23
Antioxidant Properties of Ferulic Acid and Its Possible Applicationkarger.com
24
Vitamin E in dermatologyncbi.nlm.nih.gov
25
Vitamin E and Skin Healthlpi.oregonstate.edu
26
β-Glucans: Multi-Functional Modulator of Wound Healingncbi.nlm.nih.gov
27
Anti-Wrinkle Therapy: Significant New Findings in the Non-Invasive Cosmetic Treatment of Skin Wrinkles with Beta-Glucanonlinelibrary.wiley.com
28
Skin Health Promotion Effects of Natural Beta-Glucan Derived from Cereals and Microorganisms: A Reviewonlinelibrary.wiley.com
29
Anticancer properties of low molecular weight oat beta-glucan – An in vitro studysciencedirect.com
30
A critical review on production and industrial applications 2 of beta-glucanssciencedirect.com
31
Improving skin function with CM-glucan, a biological response modifier from yeastonlinelibrary.wiley.com
32
Preparation, characterization, and biological properties of β-glucansncbi.nlm.nih.gov
33
Characterization of a new beta(1-3)-glucan branching activity of Aspergillus fumigatusncbi.nlm.nih.gov
34
Three clinical studies showing the anti-aging benefits of sodium salicylate in human skinpubmed.ncbi.nlm.nih.gov
35
Safety Assessment of Phytosterols as Used in Cosmeticscir-safety.org
36
The Ameliorative Effect of β-sitosterol on DNCB-induced Atopic Dermatitis in Micebslonline.org
37
Squalene and its potential clinical useseuropepmc.org
38
Biological and Pharmacological Activities of Squalene and Related Compounds: Potential Uses in Cosmetic Dermatology mdpi.com
39
Enhanced comedo formation in rabbit ear skin by squalene and oleic acid peroxidesonlinelibrary.wiley.com
40
Glutathione as a skin whitening agent: Facts, myths, evidence and controversiesijdvl.com
41
Glutathione for skin lightening: a regnant myth or evidence-based verity?ncbi.nlm.nih.gov
42
Glutathione for skin lightening for dermatologists and cosmetologistsijord.com
43
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.5640ncbi.nlm.nih.gov

marie veroniqueC-Therapy Serum

Buy at Credo Beauty$120.00 Amazon

Affiliate links · As an Amazon Associate, WIMJ earns from qualifying purchases.

Buy at Credo Beauty$120.00 Amazon

As an Amazon Associate, WIMJ earns from qualifying purchases.