Yon-Ka Paris Excellence Code Creme

Excellence Code Creme

Efficacy 75/100·High irritancy

Efficacy measures how well the formula delivers the claims the brand advertises · 2 of 2 advertised claims delivered

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Product claims breakdown

Anti-aging
4 ingredients contribute at the levels below
Good evidence

This product contains ubiquinone. This ingredient help neutralize free radicals in skin. By doing so, they might be able to prevent early signs of aging (like fine lines and wrinkles), at least to some extent. These ingredients will not be able to "reverse" signs of aging.

RETINYL PALMITATERole: Under-dosedThree 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~0.35–0.65%
GLUCOSAMINE HCLRole: Key activeMight be able to stimulate production of skin's natural moisturizing compounds such as hyaluronic acid. Could be helpful for evening the skin tone.~0.35–0.65%
UBIQUINONERole: Key activeCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~0.3–0.5%
BUTYROSPERMUM PARKII BUTTERRole: Key activeA 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~1.4–1.7%
Moisturizing
13 ingredients contribute at the levels below
Good evidence

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: glucosamine hcl, 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: butyrospermum parkii butter, dimethicone.

DIMETHICONERole: Key activeA silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish~0.6–0.85%
FAEX EXTRACTRole: Key activeYeast extract. Helps attract water to the upper layer of the skin~0.3–0.55%
GLUCOSAMINE HCLRole: Key activeMight be able to stimulate production of skin's natural moisturizing compounds such as hyaluronic acid. Could be helpful for evening the skin tone.~0.35–0.65%
GLYCERINRole: Key activeOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~2.2–2.7%
HELIANTHUS ANNUUS SEED OILRole: Key activeA 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~0.3–0.55%
PALMARIA PALMATA EXTRACTRole: Key activeRed algae extract that helps attract water to the upper layer of the skin~0.45–0.65%
PERSEA GRATISSIMA OILRole: Key activeAn emollient that helps soften the skin and could be helpful in repairing its barrier function~3.5–4.3%
SODIUM HYALURONATERole: Key activeOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.25–0.5%
SQUALANERole: Key activeAn 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.~0.3–0.55%
UBIQUINONERole: Key activeCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~0.3–0.5%
VITIS VINIFERA SEED OILRole: Key activeA great emollient that can also have anti-oxidant properties~2.6–3.2%
BUTYROSPERMUM PARKII BUTTERRole: Key activeA 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~1.4–1.7%
YEAST EXTRACTRole: Under-dosedHelps attract water to the upper layer of the skin and might have some anti-oxidant and skin lightening properties. It can help calm down inflammation in skin~0.3–0.55%
Anti-oxidation
UBIQUINONE at ~0.3–0.5% delivers this without it being on the label
Quiet bonus

This product contains antioxidants (ubiquinone) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).

GLUCOSAMINE HCLRole: Key activeMight be able to stimulate production of skin's natural moisturizing compounds such as hyaluronic acid. Could be helpful for evening the skin tone.~0.35–0.65%
PALMARIA PALMATA EXTRACTRole: Key activeRed algae extract that helps attract water to the upper layer of the skin~0.45–0.65%
UBIQUINONERole: Key activeCoenzyme Q10. It helps neutralize free radicals in skin, improves skin hydration and might be helpful agains fine lines and wrinkles. It can be an allergen~0.3–0.5%
VITIS VINIFERA SEED OILRole: Key activeA great emollient that can also have anti-oxidant properties~2.6–3.2%
BUTYROSPERMUM PARKII BUTTERRole: Key activeA 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~1.4–1.7%
YEAST EXTRACTRole: Under-dosedHelps attract water to the upper layer of the skin and might have some anti-oxidant and skin lightening properties. It can help calm down inflammation in skin~0.3–0.55%
Irritancy
35 flagged ingredients — patch-test recommended
High risk
We flagged 35 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
AlcoholCan be drying and contribute to skin irritation. Used in formulars to dissolve other ingredients, create a thinner product consistency or for its antibacterial propertiesHigh~1–1.2%est.
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~0.35–0.65%est.
Arnica montana flower extractA plant extract that can be irritating. It can have some anti-bacterial properties, but there are no evidence of a beneficial effect for skinHigh~0.25–0.45%est.
Decyl glucosideHelps oil and water mix together. Can be irritatingHigh~0.4–0.6%est.
Lavandula angustifolia oilAn essential oil. Potential allergen and can be irritating. It has some anti-bacterial propertiesHigh~0.25–0.5%est.
Pelargonium graveolens leaf oilAn essential oil used as a fragrance. Can be irritatingHigh~0.3–0.55%est.
Rosmarinus officinalis leaf oilA plant oil with high content of volatile compounds that can irritate the skin. Can be used as a fragrance. Has anti-bacterial properties and might help neutralize free radicals on the surface of the skinHigh~0.25–0.5%est.
Thymus vulgaris flower/leaf oilHigh~0.25–0.5%est.
ParfumAn aromatic blend of unspecified and possibly irritating ingredientsHigh~0.25–0.45%est.
Citrus aurantium bergamia fruit oilA plant oil with a high content of volatile compounds that can irritate the skin and lead to allergic reactions. Can lead to photosensitivityHigh~0.25–0.45%est.
Citrus limon peel oilA highly irritating fragranceHigh~0.25–0.45%est.
Citrus nobilis peel oilA plant oil with high content of volatile compounds that, especially when exposed to air, can cause allergic reactions and irritate the skinHigh~0.25–0.45%est.
Rosa damascena flower oilUsed as a fragrance. Can be irritatingHigh~0.25–0.5%est.
Propylene glycolHelps oil and water mix together and can enhance the penetration of other ingredients into the skin. It can be irritatingHigh~0.25–0.5%est.
Phenethyl alcoholA fragrance. Can be irritatingHigh~0.3–0.5%est.
LimoneneA common frangrance that can easily irritate skin, especially if exposed to air, light or heatHigh~0.2–0.4%est.
LinaloolA fragrance. Can be irritatingHigh~0.2–0.4%est.
CitronellolA fragrance. Can be irritatingHigh~0.2–0.35%est.
Alpha-isomethyl iononeA fragrance. Potential allergen and can be irritatingHigh~0.15–0.3%est.
GeraniolA fragrance. Can be irritatingHigh~0.2–0.35%est.
EugenolA fragrance. Is a likely irritantHigh~0.15–0.3%est.
CitralA fragrance with a lemon scent. A likely irritantHigh~0.1–0.2%est.
CoumarinA fragrance. Is a likely skin allergen and can be irritatingHigh~0.1–0.2%est.
Persea gratissima oilAn emollient that helps soften the skin and could be helpful in repairing its barrier functionLow~3.5–4.3%est.
Vitis vinifera seed oilA great emollient that can also have anti-oxidant propertiesLow~2.6–3.2%est.
Peg-75 stearateHelps water and oil mix togetherLow~0.6–0.9%est.
Ceteth-20Helps water and oil mix togetherLow~0.6–0.9%est.
Steareth-20Helps oil and water mix togetherLow~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.Low0.2%
Pisum sativum extractMight be helpful in protecting skin collagen and elastin from breaking down but solid research is lackingLow~0.25–0.5%est.
Caprylyl glycolHelps preserve products and creates a nice product textureLow~0.3–0.55%est.
ChlorphenesinA preservativeLow~0.16–0.32%est.
Caprylhydroxamic acidA preservativeLow~0.25–0.5%est.
EthylhexylglycerinA preservativeLow~0.25–0.5%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHLow~0.25–0.5%est.
Comedogenic
4 ingredients can clog pores in acne-prone skin
High risk
These ingredients have a comedogenic rating ≥ 2. In leave-on products at higher concentrations they can clog pores for acne-prone skin types.
IngredientFunctionRatingEst. amount
Hydrogenated coconut oilHigh~5–6.1%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 radicalsHigh~1.4–1.7%est.
Palmaria palmata extractRed algae extract that helps attract water to the upper layer of the skinHigh~0.45–0.65%est.
Decyl oleateHelps soften the upper layer of the skinMed~5.1–6.2%est.
~ marks concentrations estimated from label position and typical use levels

Ingredients

Filter by role to see what each ingredient is doing.

Water~45–55%
Formula
Decyl oleate~5.1–6.2%
Key activeComedo · medium
Hydrogenated coconut oil~5–6.1%
Comedo · high
Persea gratissima oil~3.5–4.3%
Key activeLow-irritation
Vitis vinifera seed oil~2.6–3.2%
Key activeLow-irritation
Glycerin~2.2–2.7%
Key active
Cetyl alcohol~1.8–2.2%
Key active
Glyceryl stearate~1.6–1.9%
Formula
Butyrospermum parkii butter~1.4–1.7%
Key activeComedo · high
Alcohol~1–1.2%
Irritant · high
Ammonium acryloyldimethyltaurate/vp copolymer~0.7–1.05%
Formula
Peg-75 stearate~0.6–0.9%
Low-irritation
Dimethicone~0.6–0.85%
Key active
Ceteth-20~0.6–0.9%
Low-irritation
Steareth-20~0.55–0.8%
Low-irritation
Palmaria palmata extract~0.45–0.65%
Key activeComedo · high
Retinyl palmitate~0.35–0.65%
Under-dosedIrritant · high
Glucosamine hcl~0.35–0.65%
Key active
Tocopheryl acetate0.2%
Low-irritation
Faex extract~0.3–0.55%
Key active
Yeast extract~0.3–0.55%
Under-dosed
Arnica montana flower extract~0.25–0.45%
Irritant · high
Cupressus sempervirens seed extract~0.25–0.45%
Formula
Polygonatum multiflorum rhizome/root extract~0.25–0.5%
Formula
Pisum sativum extract~0.25–0.5%
Low-irritation
Helianthus annuus seed oil~0.3–0.55%
Key active
Bambusa vulgaris extract~0.25–0.45%
Formula
Squalane~0.3–0.55%
Key active
Cyperus esculentus tuber extract~0.25–0.5%
Formula
Onopordum acanthium flower/leaf/stem extract~0.25–0.5%
Formula
Decyl glucoside~0.4–0.6%
Irritant · high
Glutamine~0.25–0.5%
Formula
Lavandula angustifolia oil~0.25–0.5%
Irritant · high
Pelargonium graveolens leaf oil~0.3–0.55%
Irritant · high
Rosmarinus officinalis leaf oil~0.25–0.5%
Irritant · high
Cupressus sempervirens oil~0.25–0.5%
Formula
Thymus vulgaris flower/leaf oil~0.25–0.5%
Irritant · high
Silanetriol lysinate~0.3–0.55%
Formula
Cistus incanus flower/leaf/stem extract~0.25–0.5%
Formula
Gynostemma pentaphyllum leaf/stem extract~0.3–0.55%
Formula
Sodium hyaluronate~0.25–0.5%
Key active
Ubiquinone~0.3–0.5%
Key active
Parfum~0.25–0.45%
Irritant · high
Citrus aurantium bergamia fruit oil~0.25–0.45%
Irritant · high
Guaiacum officinale wood oil~0.25–0.45%
Formula
Citrus limon peel oil~0.25–0.45%
Irritant · high
Citrus nobilis peel oil~0.25–0.45%
Irritant · high
Dipteryx odorata bean extract~0.25–0.45%
Formula
Rosa damascena flower oil~0.25–0.5%
Irritant · high
Propylene glycol~0.25–0.5%
Irritant · high
Caprylyl glycol~0.3–0.55%
Low-irritation
Sodium hydroxide~0.25–0.5%
Formula
Chlorphenesin~0.16–0.32%
Low-irritation
Phenoxyethanol~0.3–0.55%
Formula
Caprylhydroxamic acid~0.25–0.5%
Low-irritation
Phenethyl alcohol~0.3–0.5%
Irritant · high
Ethylhexylglycerin~0.25–0.5%
Low-irritation
Citric acid~0.25–0.5%
Low-irritation
Ci 77491~0.3–0.5%
Formula
Unknown~0%
Formula
Potassium oxide~0.3–0.5%
Formula
Ci 77891~0.25–0.45%
Formula
Titanium dioxide~0.4–0.6%
UV filterKey active
Mica~0.3–0.5%
Formula
Limonene~0.2–0.4%
Irritant · high
Linalool~0.2–0.4%
Irritant · high
Citronellol~0.2–0.35%
Irritant · high
Alpha-isomethyl ionone~0.15–0.3%
Irritant · high
Geraniol~0.2–0.35%
Irritant · high
Eugenol~0.15–0.3%
Irritant · high
Citral~0.1–0.2%
Irritant · high
Coumarin~0.1–0.2%
Irritant · high

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