RX Complex Serum

Le Mieux

Where to buy Possibly in stock

About this product

The Le Mieux RX Complex Serum is a serums, essence, ampoule. Our analysis of its 55 ingredients (38 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to oily / acne-prone, dry, and sensitive skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
55
Low-risk
38
Fragrance
Contains fragrance
Origin
United States

The evidence

Quick Product Notes

Paraben-Free Sulfate-Free Alcohol-Free Silicone-Free EU Allergen-Free Fungal Acne (Malassezia) Safe

Notable Effects & Ingredients

No Notable Effects & Ingredients

Ingredients Related to Skin Types

Good   Bad — tap a skin type to see which ingredients · estimated from ingredient functions
Dry Skin 16/6
Good for dry skin
Adansonia Digitata Seed Oil Adansonia Digitata Fruit Extract Sodium Acetylated Hyaluronate Sodium Hyaluronate Crosspolymer Acetyl Octapeptide-3 Caprylyl Glycol Sodium Hyaluronate Hydroxypropyltrimonium Hyaluronate Hydrolyzed Hyaluronic Acid Hyaluronic Acid Saccharomyces Ferment Filtrate Saccharomyces Lysate Extract Galactomyces Ferment Filtrate Bambusa Vulgaris Leaf/Stem Extract Sodium Hyaluronate Dimethylsilanol C12-13 Alkyl Glyceryl Hydrolyzed Hyaluronate
Caution for dry skin
Glyceryl Oleate Citrate Lysolecithin Undecylenoyl Glycine Xanthan Gum Capryloyl Glycine Tranexamic Acid
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Magnesium Ascorbyl Phosphate Tranexamic Acid
Sensitive Skin 4/1
Good for sensitive skin
Enteromorpha Compressa Extract Magnesium Ascorbyl Phosphate Superoxide Dismutase Aloe Barbadensis Leaf Juice
Caution for sensitive skin
Sodium Citrate

Ingredients list

55 total
Lower hazard (1) Higher hazard (1)
All55 Skin Conditioning53 Humectant16 Hair Conditioning11 Emulsion Stabilising4 Surfactant4 Emollient4 Film Forming4 Fragrance4
EWG CIR Ingredient Name & Cosmetic Functions Notes
Galactomyces Ferment Filtrate
(Humectant)
Fungal Acne
Fungal Acne Trigger
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
Oryza Sativa Bran Water
(Fragrance, Perfuming)
1
A
Hyaluronic Acid
(Skin Conditioning, Viscosity Increasing Agent, Antistatic Agent, Humectant, Moisturising)
Zinc Hydrolyzed Hyaluronate
(Humectant, Skin Conditioning)
1
Hydroxypropyltrimonium Hyaluronate
(Film Forming, Humectant)
Sodium Hyaluronate Dimethylsilanol
(Humectant, Skin Conditioning)
1
Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning)
C12-13 Alkyl Glyceryl Hydrolyzed Hyaluronate
(Emollient, Humectant, Skin Conditioning)
1
Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning)
1
Sodium Acetylated Hyaluronate
(Humectant)
Ascorbyl Propyl Hyaluronate
(Skin Conditioning)
1
Palmitoyl Tripeptide-5
(Skin Conditioning)
1
Acetyl Octapeptide-3
(Humectant, Skin Conditioning)
1
Nonapeptide-1
(Skin Conditioning, Hair Conditioning)
1
A
Hydrolyzed Rice Protein
(Hair Conditioning, Skin Conditioning, Antistatic Agent)
1
Dipeptide Diaminobutyroyl Benzylamide Diacetate
(Skin Conditioning)
1
A
Palmitoyl Tetrapeptide-7
(Skin Conditioning)
1
A
Palmitoyl Tripeptide-1
(Skin Conditioning)
Tranexamic Acid
(Cosmetic Astringent, Skin Conditioning)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
A
Magnesium Ascorbyl Phosphate
(Antioxidant)
Ceramide NS
(Hair Conditioning, Skin Conditioning)
1
Superoxide Dismutase
(Reducing, Skin Conditioning, Antioxidant)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Phospholipids
(Skin Conditioning)
1
A
Lysolecithin
(Emulsifying, Surfactant)
1
A
Tocotrienols
(Oral Care Agent, Skin Conditioning, Uv Absorber)
1
Glucosamine HCl
(Ph Adjuster, Antistatic Agent, Hair Conditioning)
1
Enteromorpha Compressa Extract
(Skin Protecting)
Bambusa Vulgaris Leaf/Stem Extract
(Humectant, Oral Care Agent)
Citrullus Lanatus Seed Oil
(Skin Conditioning, Skin Conditioning Emollient)
1
Yeast Extract
(Skin Conditioning)
1
Saccharomyces Ferment Filtrate
(Humectant)
1
Saccharomyces Lysate Extract
(Humectant, Skin Conditioning)
Pisum Sativum Extract
(Skin Conditioning, Skin Protecting)
1
A
Adansonia Digitata Seed Oil
(Hair Conditioning, Skin Conditioning, Emollient)
1
A
Beta-Glucan
(Bulking Agent, Skin Conditioning)
1
Adansonia Digitata Fruit Extract
(Humectant, Skin Conditioning, Emollient)
B
Aloe Barbadensis Leaf Juice
(Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
SIMMONDSIA CHINENSIS SEED OIL
(Hair Conditioning, Skin Conditioning, Skin Conditioning Emollient)
1
A
Pullulan
(Binding Agent, Film Forming, Binding)
1
A
Sclerotium Gum
(Emulsion Stabilising, Skin Conditioning, Viscosity Increasing Agent, Viscosity Controlling)
Oryza sativa bran oil
(Skin Conditioning, Skin Conditioning Emollient)
1
Glyceryl Oleate Citrate
(Emulsifying, Surfactant)
rosmarinus officinalis leaf extract
(Antimicrobial, Fragrance, Skin Conditioning)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
A
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking)
1
Sodium Phytate
(Chelating Agent, Oral Care Agent)
PARFUM
(Fragrance, Perfuming)
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
B
Undecylenoyl Glycine
(Cleansing, Hair Conditioning, Surfactant)
1
B
Capryloyl Glycine
(Cleansing, Hair Conditioning, Surfactant)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Peptides
Supports skin hydration and improves firmness.
Hyaluronic Acid
Hydrates by attracting and holding water.
Antioxidants
Shields skin from free radical damage.
Vitamin E
Protects skin and soothes irritation.
Vitamin C
Brightens, evens tone, and supports collagen.
Niacinamide
Strengthens, smooths, and brightens skin.
Ceramides
Locks in moisture and supports skin barrier.
Tranexamic Acid
Helps fade dark spots and even skin tone.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Anti-AgingSoftens lines and helps skin look youthful.
Redness ReducingSoothes visible redness and calms irritation.
Barrier RepairStrengthen and restore your skin's natural barrier.
Scar HealingImproves the look of marks and scars.
Reduces IrritationEases discomfort and supports skin resilience.
BrighteningRestores radiance to dull, tired skin.
Skin TextureSmooths rough patches and refines texture.

Concerns

Not fungal acne (malassezia) safe

Ingredients explained

Oryza Sativa Bran Water
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfuming
Hyaluronic Acid
Skin conditioning, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningViscosity increasing agentAntistatic agentHumectantMoisturising
Zinc Hydrolyzed Hyaluronate
Humectant, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A HumectantSkin conditioning
Hydroxypropyltrimonium Hyaluronate
Film forming, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Film formingHumectant
Sodium Hyaluronate Dimethylsilanol
Humectant, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A HumectantSkin conditioning
Sodium Hyaluronate Crosspolymer
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
C12-13 Alkyl Glyceryl Hydrolyzed Hyaluronate
Emollient, Humectant
Limited public safety data.Read moreShow less
EWG N/A EmollientHumectantSkin conditioning
Hydrolyzed Hyaluronic Acid
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningHumectantSkin conditioning
Sodium Acetylated Hyaluronate
Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Humectant
Ascorbyl Propyl Hyaluronate
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Palmitoyl Tripeptide-5
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Acetyl Octapeptide-3
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Nonapeptide-1
Skin conditioning, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningHair conditioning
Hydrolyzed Rice Protein
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningAntistatic agent
Dipeptide Diaminobutyroyl Benzylamide Diacetate
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
+ 37 more — see the full ingredients list above
Galactomyces Ferment Filtrate
Humectant
Limited public safety data.Read moreShow less
EWG N/A Humectant Fungal-acne trigger
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Aloe Barbadensis Leaf Juice
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A CIR B Skin conditioning Good for Sensitive Skin

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.

General guidance from this product's category and active ingredients — always follow the directions on the package.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Vitamin C (ascorbic) 5–20%

L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.

Ascorbyl Propyl Hyaluronate, Magnesium Ascorbyl Phosphate

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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