Le Mieux HYALURONIC SERUM

Le Mieux HYALURONIC SERUM

Efficacy87/100IrritancyLow

Works for

Moisturizing
Panthenol, Galactomyces ferment filtrate + 15 more
Works well
What the product description says
“Hydrate and plump dehydrated skin with our multi-dimensional hyaluronic acid complex.”
Source: Le Mieux Skincare

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: anhydroxylitol, galactomyces ferment filtrate.

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: oryza sativa bran oil, caprylyl glycol.

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

PanthenolHero· HumectantEffect: HighHelps attract water to the upper layer of the skin and can help improve skin barrier function~0.35–0.85%
Galactomyces ferment filtrateKey active· HumectantEffect: HighA yeast ferment filtrate (also known as Pitera - a trademarked name for the filtrate reserved by the SK-II brand). It helps attract water to the upper layer of the skin, can help neutralize antioxidants and can be helpful in evening out the skin tone. It might be somewhat helpful in preventing premature skin aging but solid evidence is lacking. A small manufacturer study also shows that, when used in high concentrations, it can help reduce sebum production and help against blocked pores~23–34%
Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~7.3–11%
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~3.9–5.9%
Sodium hyaluronate crosspolymerKey active· HumectantEffect: HighAttracts water into the upper layer of the skin~1.8–2.7%
Hydrolyzed hyaluronic acidKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin. A version of it is naturally present in skin~1.3–1.9%
Sodium acetylated hyaluronateKey active· HumectantEffect: HighA type of hyaluronic acid that works as an excellent moisturizer by attracting water into the upper layer of the skin. Is typically feels less sticky on the skin compared to the usual hyaluronic acid~0.8–1.25%
XylitylglucosideKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin and repair the skin barrier function~0.35–0.85%
Methyl gluceth-20Key active· HumectantEffect: MediumHelps attract water to the upper layer of the skin and soften it~0.3–0.7%
Oryza sativa bran oilKey active· EmollientEffect: HighHelps soften the upper layer of the skin and might have some anti-oxidant properties~0.2–0.8%
AnhydroxylitolKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin and repair the skin barrir function~0.2–0.75%
Polyglutamic acidKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin.~0.15–0.6%
Oryza sativa bran waterEffect: LowMight be somewhat helpful for attracting water to the upper layer of the skin~5.3–7.9%
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~0.4–0.95%
Pentylene glycol· EmollientEffect: LowUsed to preserve products, dissolve other ingredients and create a nice product texture~0.2–0.7%
Caprylyl glycol· Humectant, EmollientEffect: LowHelps preserve products and creates a nice product texture~0.15–0.65%
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~0.15–0.55%
Anti-aging
Galactomyces ferment filtrate, Tocotrienols + 3 more
May help
What the product description says
“Infused with vitamins and botanical actives, this serum locks in moisture without clogging pores, smooths fine lines, and soothes for a firmer, healthier-looking complexion—perfect for blemish-prone skin.”
Source: Le Mieux Skincare

This product contains galactomyces ferment filtrate, 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.

Galactomyces ferment filtrateKey activeEffect: MediumA yeast ferment filtrate (also known as Pitera - a trademarked name for the filtrate reserved by the SK-II brand). It helps attract water to the upper layer of the skin, can help neutralize antioxidants and can be helpful in evening out the skin tone. It might be somewhat helpful in preventing premature skin aging but solid evidence is lacking. A small manufacturer study also shows that, when used in high concentrations, it can help reduce sebum production and help against blocked pores~23–34%
TocotrienolsKey activeEffect: MediumA type of vitamin E that is more powerful in neutralizing free radicals compared to its other forms~0.45–1.1%
Hyaluronic acidEffect: LowOne 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~3.9–5.9%
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~0.4–0.95%
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~0.15–0.55%
Anti-oxidation
Side benefit · Galactomyces ferment filtrate, Tocotrienols + 3 more
Works well

This product contains antioxidants (galactomyces ferment filtrate, 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 - camellia sinensis leaf extract, ginkgo biloba leaf extract also can have an antioxidant effect, but there is less evidence to confirm their effectiveness in skin.

Galactomyces ferment filtrateKey activeEffect: HighA yeast ferment filtrate (also known as Pitera - a trademarked name for the filtrate reserved by the SK-II brand). It helps attract water to the upper layer of the skin, can help neutralize antioxidants and can be helpful in evening out the skin tone. It might be somewhat helpful in preventing premature skin aging but solid evidence is lacking. A small manufacturer study also shows that, when used in high concentrations, it can help reduce sebum production and help against blocked pores~23–34%
TocotrienolsKey activeEffect: HighA type of vitamin E that is more powerful in neutralizing free radicals compared to its other forms~0.45–1.1%
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~0.4–0.95%
Ginkgo biloba leaf extractKey activeEffect: MediumA plant extract that might help neutralize free radicals and reduce inflammation in skin. It can be irritating~0.4–0.95%
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~0.15–0.55%
Evens skin tone
Side benefit · Galactomyces ferment filtrate, Camellia sinensis leaf extract
May help

The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually works: galactomyces ferment filtrate.

Galactomyces ferment filtrateKey activeEffect: MediumA yeast ferment filtrate (also known as Pitera - a trademarked name for the filtrate reserved by the SK-II brand). It helps attract water to the upper layer of the skin, can help neutralize antioxidants and can be helpful in evening out the skin tone. It might be somewhat helpful in preventing premature skin aging but solid evidence is lacking. A small manufacturer study also shows that, when used in high concentrations, it can help reduce sebum production and help against blocked pores~23–34%
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~0.4–0.95%

Can it cause trouble?

Irritancy
5 flagged ingredients
Low risk
We flag 5 ingredients with irritancy potential; the product's overall irritancy is low. The table lists each ingredient's own rating.
IngredientFunctionIrritationEst. amount
Ginkgo biloba leaf extractA plant extract that might help neutralize free radicals and reduce inflammation in skin. It can be irritatingHigh~0.4–0.95%est.
Sodium hyaluronate crosspolymerAttracts water into the upper layer of the skinMedium~1.8–2.7%est.
Pentylene glycolUsed to preserve products, dissolve other ingredients and create a nice product textureMedium~0.2–0.7%est.
Caprylyl glycolHelps preserve products and creates a nice product textureMedium~0.15–0.65%est.
EthylhexylglycerinA preservativeMedium~0.1–0.45%est.
Comedogenic
Clean of flagged comedogenic ingredients
None flagged

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Ingredients

Filter by role to see what each ingredient is doing.

Galactomyces ferment filtrate~23–34%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-oxidationMattifyingEvens skin toneAnti-agingAnti-blemish

A yeast ferment filtrate (also known as Pitera - a trademarked name for the filtrate reserved by the SK-II brand). It helps attract water to the upper layer of the skin, can help neutralize antioxidants and can be helpful in evening out the skin tone. It might be somewhat helpful in preventing premature skin aging but solid evidence is lacking. A small manufacturer study also shows that, when used in high concentrations, it can help reduce sebum production and help against blocked pores

More about Galactomyces ferment filtrate
Sodium hyaluronate~7.3–11%
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
Oryza sativa bran water~5.3–7.9%
Formula
Irritation risk
Low
Works for
Moisturizing

Might be somewhat helpful for attracting water to the upper layer of the skin

More about Oryza sativa bran water
Hyaluronic acid~3.9–5.9%
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
Zinc hydrolyzed hyaluronate~3.2–4.7%
Formula
Hydroxypropyltrimonium hyaluronate~2.6–3.9%
Formula
Sodium hyaluronate dimethylsilanol~2.1–3.1%
Formula
Sodium hyaluronate crosspolymer~1.8–2.7%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

Attracts water into the upper layer of the skin

More about Sodium hyaluronate crosspolymer
C12-13 alkyl glyceryl hydrolyzed hyaluronate~1.6–2.4%
Formula
Hydrolyzed hyaluronic acid~1.3–1.9%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin. A version of it is naturally present in skin

More about Hydrolyzed hyaluronic acid
Sodium acetylated hyaluronate~0.8–1.25%
Key active
Irritation risk
Low
Works for
Moisturizing

A type of hyaluronic acid that works as an excellent moisturizer by attracting water into the upper layer of the skin. Is typically feels less sticky on the skin compared to the usual hyaluronic acid

More about Sodium acetylated hyaluronate
Ascorbyl propyl hyaluronate~0.55–1.25%
Formula
Tocotrienols~0.45–1.1%
Key active
Irritation risk
Low
Works for
Anti-oxidationAnti-aging

A type of vitamin E that is more powerful in neutralizing free radicals compared to its other forms

More about Tocotrienols
Ginkgo biloba leaf extract~0.4–0.95%
Key activeIrritant · high
Irritation risk
High
Works for
Anti-oxidationAnti-inflammatoryAntibacterialAnti-blemish

A plant extract that might help neutralize free radicals and reduce inflammation in skin. It can be irritating

More about Ginkgo biloba leaf extract
Camellia sinensis leaf extract~0.4–0.95%
Key active
Irritation risk
Low
Works for
Anti-oxidationAntibacterialAnti-agingAnti-blemishEvens skin toneMoisturizing

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
Propanediol~0.4–0.95%
Formula
Irritation risk
Low

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

More about Propanediol
Xylitylglucoside~0.35–0.85%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin and repair the skin barrier function

More about Xylitylglucoside
Panthenol~0.35–0.85%
Hero · Moisturizing
Irritation risk
Low
Works for
Reduces rednessMoisturizingReduces irritation

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

More about Panthenol
Trigonella foenum-graecum seed extract~0.35–0.75%
Formula
Methyl gluceth-20~0.3–0.7%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin and soften it

More about Methyl gluceth-20
Anhydroxylitol~0.2–0.75%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin and repair the skin barrir function

More about Anhydroxylitol
Xylitol~0.2–0.7%
Formula
Irritation risk
Low

Helps attract water to the upper layer of the skin and repair the skin barrier function

More about Xylitol
Hydroxyethylcellulose~0.2–0.75%
Formula
Irritation risk
Low

Used to thicken product formulations and create gel-like textures

More about Hydroxyethylcellulose
Oryza sativa bran oil~0.2–0.8%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin and might have some anti-oxidant properties

More about Oryza sativa bran oil
Tocopherol~0.15–0.55%
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
Polyglutamic acid~0.15–0.6%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps attract water to the upper layer of the skin.

More about Polyglutamic acid
Pentylene glycol~0.2–0.7%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Used to preserve products, dissolve other ingredients and create a nice product texture

More about Pentylene glycol
Caprylyl glycol~0.15–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps preserve products and creates a nice product texture

More about Caprylyl glycol
Ethylhexylglycerin~0.1–0.45%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Ingredient list view

Galactomyces ferment filtrate, Sodium hyaluronate, Oryza sativa bran water, Hyaluronic acid, Zinc hydrolyzed hyaluronate, Hydroxypropyltrimonium hyaluronate, Sodium hyaluronate dimethylsilanol, Sodium hyaluronate crosspolymer, C12-13 alkyl glyceryl hydrolyzed hyaluronate, Hydrolyzed hyaluronic acid, Sodium acetylated hyaluronate, Ascorbyl propyl hyaluronate, Tocotrienols, Ginkgo biloba leaf extract, Camellia sinensis leaf extract, Propanediol, Xylitylglucoside, Panthenol, Trigonella foenum-graecum seed extract, Methyl gluceth-20, Anhydroxylitol, Xylitol, Hydroxyethylcellulose, Oryza sativa bran oil, Tocopherol, Polyglutamic acid, Pentylene glycol, Caprylyl glycol, Ethylhexylglycerin

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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
Le MieuxHYALURONIC SERUMYOUR PRODUCTTypologyPlumping Serum — 3% Hyaluronic Acid + 2% B5TOUN28Galactomyces + Niacinamide SerumnumbuzinNo.3 Bifida Bakuchiol Zero Pore Serum
Match—41%41%41%
Price—$42.80$35.20$17.81
Shared key ingredients—3 of 143 of 143 of 14
Key difference——NiacinamideNiacinamide
Irritancy Low Low Low Low
Drying alcohol————
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 25 studies and safety reviews.

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Le Mieux HYALURONIC SERUM
Le MieuxHYALURONIC SERUM

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As an Amazon Associate, WIMJ earns from qualifying purchases.