What's In My Jar
Yon-Ka Paris Skincare Yonka Paris Hydra No1 Creme
Yon-Ka Paris Skincare

Yon-Ka Paris Skincare Yonka Paris Hydra No1 Creme

Efficacy100/100IrritancyHigh
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Works for

1 of 1 advertised claim delivered

Moisturizing
20 ingredients credited for this claim
Strong support
What the product description says
“Yonka Paris Hydra No 1 Creme”
From product name

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: glycerin, hyaluronic acid.

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: caprylic/capric triglyceride, squalane.

The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: panthenol

Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.4–0.6%
Imperata cylindrica root extractKey active· HumectantEffect: HighA plat extract that might help neutralize free radicals in skin and attract water to its upper layer~0.6–0.9%
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~4.8–5.8%
Hyaluronic acidKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin. Naturally present in skin. Typically has large molecule size unless advertised otherwise on the product label. Helps support skin's barrier function and may help to reduce inflammation~0.35–0.65%
PanthenolHero· HumectantEffect: HighHelps attract water to the upper layer of the skin and can help improve skin barrier function~0.45–0.65%
Caprylic/capric triglycerideKey active· Emollient, OcclusiveEffect: HighA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin~3.3–4%
Vitis vinifera seed oilKey active· EmollientEffect: HighA great emollient that can also have anti-oxidant properties~4.2–5.2%
Ethyl linoleateKey active· EmollientEffect: HighHelps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lacking~0.6–0.9%
SqualaneKey active· Emollient, OcclusiveEffect: HighAn 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.~0.75–1.15%
Octyldodecyl myristateKey active· EmollientEffect: MediumHelps soften the upper layer of the skin~1.3–1.6%
Cetyl alcoholKey active· EmollientEffect: MediumA non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together~1.2–1.4%
Glyceryl stearate· EmollientEffect: LowAn emollient that softens the skin and forms a protective layer on its surface. Helps water and oil mix together~0.95–1.15%
Butylene glycol· HumectantEffect: LowUsed 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~0.25–0.45%
Caprylyl glycol· Humectant, EmollientEffect: LowHelps preserve products and creates a nice product texture~0.45–0.65%
Ethyl oleate· EmollientEffect: LowEthyl oleate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of oleic acid with the hydroxy group of ethanol. It derives from an oleic acid. In skincare, it is used to soften the upper layer of the skin, improve the product texture and smell~0.55–0.85%
Rosa damascena flower oilEffect: LowUsed as a fragrance. Can be irritating~0.35–0.65%
Butyrospermum parkii butterUnder-dosedEffect: HighA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals~0.7–1.05%
Aloe barbadensis leaf juiceEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.6–0.9%
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~0.45–0.65%
Ascorbyl tetraisopalmitateEffect: Low, below effective doseA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)~0.55–0.8%
Anti-oxidation
Not advertised by the brand · 8 ingredients credited for this claim
Moderate support

This product contains antioxidants (imperata cylindrica root extract) that might be able to help neutralize free radicals in skin to lessen the damage it gets from the UV light (sun). There is not enough evidence to confirm their effectiveness in skin though.

Imperata cylindrica root extractKey activeEffect: MediumA plat extract that might help neutralize free radicals in skin and attract water to its upper layer~0.6–0.9%
Vitis vinifera seed oilEffect: LowA great emollient that can also have anti-oxidant properties~4.2–5.2%
Ascorbyl tetraisopalmitateUnder-dosedEffect: HighA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)~0.55–0.8%
Ascorbic acidUnder-dosedEffect: HighThe 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~0.25–0.45%
TocopherolUnder-dosedEffect: HighPure 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~0.45–0.65%
Butyrospermum parkii butterEffect: Low, below effective doseA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals~0.7–1.05%
Tocopheryl acetateEffect: Low, below effective doseA more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.~0.45–0.65%
Anthemis nobilis flower oilEffect: Low, below effective doseAn essential oil that is used as a fragrance and can be irritating. It might have some anti-oxidant effect in skin~0.3–0.6%
Anti-blemish
Not advertised by the brand · 3 ingredients credited for this claim
Good support

This product might be able to help reduce blemishes and clogged pores because it contains ethyl linoleate.

Ethyl linoleateKey activeEffect: HighHelps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lacking~0.6–0.9%
Retinyl palmitateUnder-dosedEffect: MediumThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect~0.45–0.7%
Aloe barbadensis leaf juiceEffect: Low, below effective doseTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin~0.6–0.9%

Can it cause trouble?

Irritancy
10 strong irritants: Retinyl palmitate, Lavandula angustifolia extract + 8 more — patch-test recommended
High risk
We flagged 26 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Retinyl palmitateThree steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effectHigh~0.45–0.7%est.
Lavandula angustifolia extractUsed for fragrance and contains volatile compounds that can irritate the skinHigh~0.35–0.65%est.
Rosa damascena flower oilUsed as a fragrance. Can be irritatingHigh~0.35–0.65%est.
Anthemis nobilis flower oilAn essential oil that is used as a fragrance and can be irritating. It might have some anti-oxidant effect in skinHigh~0.3–0.6%est.
Chamomilla recutita flower oilPlant oil that can have healing and anti-inflammatory properties. It contains volatile compouunds that are potential allergens and can be irritatingHigh~0.35–0.6%est.
Ascorbic acidThe 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 agingHigh~0.25–0.45%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.2–0.35%est.
LinaloolA fragrance. Can be irritatingHigh~0.15–0.25%est.
CitronellolA fragrance. Can be irritatingHigh~0.1–0.2%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.1–0.15%est.
CitralA fragrance with a lemon scent. A likely irritantHigh~0.05%est.
FarnesolAdded to create a nice product smell. Can be irritatingHigh~0.05%est.
Vitis vinifera seed oilA great emollient that can also have anti-oxidant propertiesMedium~4.2–5.2%est.
Caprylic/capric triglycerideA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerinMedium~3.3–4%est.
Imperata cylindrica root extractA plat extract that might help neutralize free radicals in skin and attract water to its upper layerMedium~0.6–0.9%est.
Ethyl linoleateHelps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lackingMedium~0.6–0.9%est.
Aloe barbadensis leaf juiceTraditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skinMedium~0.6–0.9%est.
Ethyl oleateEthyl oleate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of oleic acid with the hydroxy group of ethanol. It derives from an oleic acid. In skincare, it is used to soften the upper layer of the skin, improve the product texture and smellMedium~0.55–0.85%est.
Ascorbyl tetraisopalmitateA vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)Medium~0.55–0.8%est.
Tocopheryl acetateA more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.Medium~0.45–0.65%est.
Caprylyl glycolHelps preserve products and creates a nice product textureMedium~0.45–0.65%est.
Peg-75 stearateHelps water and oil mix togetherMedium~0.4–0.6%est.
Steareth-20Helps oil and water mix togetherMedium~0.45–0.65%est.
Ceteth-20Helps water and oil mix togetherMedium~0.4–0.6%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.25–0.4%est.
ChlorphenesinA preservativeMedium~0.16–0.32%est.
Comedogenic
2 ingredients rated 2 or more on the 0–5 pore-clogging scale
2 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
Hydrogenated coconut oil—3/5~2.1–2.6%est.
Butyrospermum parkii butterA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals3/5~0.7–1.05%est.
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Ingredients

Filter by role to see what each ingredient is doing.

Water~45–55%
Formula
Irritation risk
Low

Plain old water

More about Water
Glycerin~4.8–5.8%
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
Vitis vinifera seed oil~4.2–5.2%
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
Caprylic/capric triglyceride~3.3–4%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin

More about Caprylic/capric triglyceride
Propanediol~2.6–3.1%
Formula
Irritation risk
Low

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

More about Propanediol
Hydrogenated coconut oil~2.1–2.6%
Comedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
More about Hydrogenated coconut oil
Propylene glycol dicaprylate/dicaprate~1.7–2.1%
Formula
Irritation risk
Low
More about Propylene glycol dicaprylate/dicaprate
Corylus avellana seed oil~1.5–1.8%
Formula
Irritation risk
Low
More about Corylus avellana seed oil
Octyldodecyl myristate~1.3–1.6%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Octyldodecyl myristate
Cetyl alcohol~1.2–1.4%
Key active
Irritation risk
Low
Works for
CleansingMoisturizing

A non-drying alcohol that works to soften the skin and stabilize product formulations helping oil and water mix together

More about Cetyl alcohol
Glyceryl stearate~0.95–1.15%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

An emollient that softens the skin and forms a protective layer on its surface. Helps water and oil mix together

More about Glyceryl stearate
Squalane~0.75–1.15%
Key active
Irritation risk
Low
Works for
Moisturizing

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.

More about Squalane
Butyrospermum parkii butter~0.7–1.05%
Under-dosedComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingAnti-oxidationAnti-aging

A great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals

More about Butyrospermum parkii butter
Imperata cylindrica root extract~0.6–0.9%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-oxidationAnti-inflammatory

A plat extract that might help neutralize free radicals in skin and attract water to its upper layer

More about Imperata cylindrica root extract
Ethyl linoleate~0.6–0.9%
Key activeIrritant · medium
Irritation risk
Medium
Works for
MoisturizingAnti-blemishEvens skin toneAnti-inflammatory

Helps reduce acne and blemishes. Helps to soften the upper layer of the skin and reduce inflammation. Might be helpful in reducing hyperpigmentation and evening out the skin tone, but evidence of effectiveness in skin are lacking

More about Ethyl linoleate
Aloe barbadensis leaf juice~0.6–0.9%
Irritant · medium
Irritation risk
Medium
Works for
MoisturizingReduces rednessReduces irritationAntibacterialAnti-inflammatoryAnti-blemishAnti-aging

Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin

More about Aloe barbadensis leaf juice
Ethyl oleate~0.55–0.85%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Ethyl oleate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of oleic acid with the hydroxy group of ethanol. It derives from an oleic acid. In skincare, it is used to soften the upper layer of the skin, improve the product texture and smell

More about Ethyl oleate
Ascorbyl tetraisopalmitate~0.55–0.8%
Under-dosedIrritant · medium
Irritation risk
Medium
Works for
Anti-oxidationAnti-agingEvens skin toneMoisturizing

A vitamin C derivative. Studies show that is might be effective in reducing hyperpigmentation, but there are no studies confirming that it is effectively converted into the bioavailable form of Vitamin C in skin. It is not clear how this derivative compares in effectiveness to the topical application of bioavailable form of vitamin C (L-ascorbic acid)

More about Ascorbyl tetraisopalmitate
Retinyl palmitate~0.45–0.7%
Under-dosedIrritant · high
Irritation risk
High
Works for
Anti-blemishEvens skin toneAnti-agingExfoliation

Three steps removed from the active form of vitamin A - retinoic acid. To have an effect in the skin, it first needs to be converted twice to become the retinoic acid. This means it is less potent than retinol, but could also be less irritating. Once converted to the retinoic acid in the skin, it helps against all signs of aging, improves skin cell turnover and helps fight blemishes and clogged pores. However, in many cosmetic formulations, it is used in a concentration that is too low to have the full effect

More about Retinyl palmitate
Panthenol~0.45–0.65%
Hero · Moisturizing
Irritation risk
Low
Works for
MoisturizingReduces rednessReduces irritation

Helps attract water to the upper layer of the skin and can help improve skin barrier function

More about Panthenol
Tocopheryl acetate~0.45–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Anti-oxidation

A more stable but less bio-available form of vitamin E compared to Tocopherol. Might help moisturize and protect the skin from free radicals, but mostly used in low concentrations to stabilize other ingredients.

More about Tocopheryl acetate
Tocopherol~0.45–0.65%
Under-dosed
Irritation risk
Low
Works for
Anti-oxidationAnti-agingAnti-inflammatoryMoisturizing

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
Pichia anomala extract~0.4–0.65%
Formula
Irritation risk
Low
More about Pichia anomala extract
Lavandula angustifolia extract~0.35–0.65%
Irritant · high
Irritation risk
High

Used for fragrance and contains volatile compounds that can irritate the skin

More about Lavandula angustifolia extract
Rosmarinus officinalis leaf~0.35–0.65%
Formula
Irritation risk
Low
More about Rosmarinus officinalis leaf
Sodium hyaluronate~0.4–0.6%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate
Caprylyl glycol~0.45–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps preserve products and creates a nice product texture

More about Caprylyl glycol
Cupressus sempervirens oil~0.4–0.6%
Formula
Irritation risk
Low
More about Cupressus sempervirens oil
Jasminum sambac flower extract~0.35–0.6%
Formula
Irritation risk
Low
More about Jasminum sambac flower extract
Oil
Not recognized
Rosa damascena flower oil~0.35–0.65%
Irritant · high
Irritation risk
High
Works for
Moisturizing

Used as a fragrance. Can be irritating

More about Rosa damascena flower oil
Anthemis nobilis flower oil~0.3–0.6%
Irritant · high
Irritation risk
High
Works for
Anti-inflammatoryAnti-oxidation

An essential oil that is used as a fragrance and can be irritating. It might have some anti-oxidant effect in skin

More about Anthemis nobilis flower oil
Chamomilla recutita flower oil~0.35–0.6%
Irritant · high
Irritation risk
High

Plant oil that can have healing and anti-inflammatory properties. It contains volatile compouunds that are potential allergens and can be irritating

More about Chamomilla recutita flower oil
Hyaluronic acid~0.35–0.65%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-inflammatoryAnti-aging

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin. Naturally present in skin. Typically has large molecule size unless advertised otherwise on the product label. Helps support skin's barrier function and may help to reduce inflammation

More about Hyaluronic acid
Silanetriol~0.35–0.65%
Formula
Irritation risk
Low
More about Silanetriol
Peg-75 stearate~0.4–0.6%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Peg-75 stearate
Steareth-20~0.45–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Steareth-20
Ceteth-20~0.4–0.6%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps water and oil mix together

More about Ceteth-20
Butylene glycol~0.25–0.45%
Formula
Irritation risk
Low
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

More about Butylene glycol
Ascorbic acid~0.25–0.45%
Under-dosedIrritant · high
Irritation risk
High
Works for
Anti-oxidationAnti-agingEvens 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

More about Ascorbic acid
Citric acid~0.25–0.4%
Irritant · medium
Irritation risk
Medium

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

More about Citric acid
Phenoxyethanol~0.25–0.45%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Parfum~0.2–0.35%
Irritant · high
Irritation risk
High

An aromatic blend of unspecified and possibly irritating ingredients

More about Parfum
Chlorphenesin~0.16–0.32%
Irritant · medium
Irritation risk
Medium

A preservative

More about Chlorphenesin
Linalool~0.15–0.25%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Linalool
Rna~0.1–0.2%
Formula
Irritation risk
Low
More about Rna
Citronellol~0.1–0.2%
Irritant · high
Irritation risk
High

A fragrance. Can be irritating

More about Citronellol
Limonene~0.1–0.15%
Irritant · high
Irritation risk
High

A common frangrance that can easily irritate skin, especially if exposed to air, light or heat

More about Limonene
Citral~0.05%
Irritant · high
Irritation risk
High

A fragrance with a lemon scent. A likely irritant

More about Citral
Farnesol~0.05%
Irritant · high
Irritation risk
High

Added to create a nice product smell. Can be irritating

More about Farnesol
Ingredient list view

Water, Glycerin, Vitis vinifera seed oil, Caprylic/capric triglyceride, Propanediol, Hydrogenated coconut oil, Propylene glycol dicaprylate/dicaprate, Corylus avellana seed oil, Octyldodecyl myristate, Cetyl alcohol, Glyceryl stearate, Squalane, Butyrospermum parkii butter, Imperata cylindrica root extract, Ethyl linoleate, Aloe barbadensis leaf juice, Ethyl oleate, Ascorbyl tetraisopalmitate, Retinyl palmitate, Panthenol, Tocopheryl acetate, Tocopherol, Pichia anomala extract, Lavandula angustifolia extract, Rosmarinus officinalis leaf, Sodium hyaluronate, Caprylyl glycol, Cupressus sempervirens oil, Jasminum sambac flower extract, Unknown, Rosa damascena flower oil, Anthemis nobilis flower oil, Chamomilla recutita flower oil, Hyaluronic acid, Silanetriol, Peg-75 stearate, Steareth-20, Ceteth-20, Butylene glycol, Ascorbic acid, Citric acid, Phenoxyethanol, Parfum, Chlorphenesin, Linalool, Rna, Citronellol, Limonene, Citral, Farnesol

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Product summary

Based on the ingredient list, "Yon-Ka Paris Skincare - Yonka Paris Hydra No1 Creme" can work well for skin moisturization. To work well, any moisturizer needs to include a combination of water-binding and emollient ingredients. Yon-Ka Paris Skincare - Yonka Paris Hydra No1 Creme ticks this box. Panthenol, glycerin, hyaluronic acid, imperata cylindrica root extract and sodium hyaluronate in this product (humectants) attract water molecules to the upper layer of the skin (the water comes from the outside air or from the deeper layers of the skin if the air is dry). Emollients in this formulation (ethyl linoleate, vitis vinifera seed oil, caprylic/capric triglyceride, squalane and cetyl alcohol) help to reduce the moisture loss from the skin. They also soften the skin surface and relieve the feeling of dryness and tightness.

Ingredient callouts

  • This product also contains Vitamin C (Ascorbic Acid). It can be an effective active for anti-aging and evening out the skin tone, but in this moisturizer it is used for stabilizing other ingredients in the formulation. In this concentration (0.25% - 0.45%) it cannot have a noticeable benefit for the skin.
  • This moisturizer includes a form of Retinoids (vitamin A) - retinyl palmitate 0.45% - 0.70%, but this type of vitamin A is not very effective. It could in theory help with fine lines and wrinkles, but the effect is most likely minimal.
This product contains ingredients that could be beneficial, but their concentrations are too low in this formulation: vitamin c, vitamin e and ascorbyl tetraisopalmitate

Irritation risk

There are quite a few common irritants in this product, including ingredients without particular skin benefits. We would not recommend it for sensitive skin. We assess the overall irritancy of this moisturizer to be high. For a detailed overview of all potential irritants: click here

You can see the detailed formula review with the breakdown of all actives in the product and the full ingredient list with estimated concentrations in the tables below.

Price

The product retails for 88.00$ in the United States and for 106.40CA$ in Canada.

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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 18 studies and safety reviews.

  1. 1
    Glycerol and the skin: holistic approach to its origin and functionsncbi.nlm.nih.gov
  2. 2
    Allergic contact dermatitis from grassespubmed.ncbi.nlm.nih.gov
  3. 3
    Ethyl linoleate inhibits α-MSH-induced melanogenesis through Akt/GSK3β/β-catenin signal pathwayncbi.nlm.nih.gov
  4. 4
    Double-blind, randomized, placebo-controlled study of a lotion containing triethyl citrate and ethyl linoleate in the treatment of acne vulgarisonlinelibrary.wiley.com
  5. 5
    Assessment of penetration of Ascorbyl Tetraisopalmitate into biological membranes by molecular dynamicssciencedirect.com
  6. 6
    Stability evaluation of tocopheryl acetate and ascorbyl tetraisopalmitate in isolation and incorporated in cosmetic formulations using thermal analysisscielo.br
Yon-Ka Paris Skincare Yonka Paris Hydra No1 Creme
Yon-Ka Paris SkincareYonka Paris Hydra No1 Creme
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