Composition No.1 Serum

Auteur

Where to buy Possibly in stock

About this product

The Auteur Composition No.1 Serum is a serums, essence, ampoule. Our analysis of its 53 ingredients (36 low-risk) rates it Excellent (95/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
53
Low-risk
36
Fragrance
Contains fragrance
Origin
Germany
Data updated
May 2026

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 12/9
Good for dry skin
Glyceryl Stearate Citrate Saccharide Isomerate Sodium Acetylated Hyaluronate Sodium Hyaluronate Crosspolymer Squalane Ectoin Caprylic/Capric Triglyceride Sodium PCA Sodium Hyaluronate Glycerin Lactic Acid Lecithin
Caution for dry skin
Maltodextrin Cellulose Sodium Stearoyl Glutamate Alpha-Glucan Oligosaccharide Xanthan Gum Glycerin Hydrogenated Phosphatidylcholine Alcohol Lecithin
Oily/Acne-Prone Skin 2/0
Good for oily/acne-prone skin
Alcohol Retinol
Sensitive Skin 3/9
Good for sensitive skin
Cyclotetrapeptide-24 Aminocyclohexane Carboxylate Glycerin Allantoin
Caution for sensitive skin
Sodium Citrate Caprylic/Capric Triglyceride Glycerin Citric Acid Alcohol Lactic Acid Limonene Retinol Pentafluoropropane

Ingredients list

53 total
Lower hazard (1) Higher hazard (9)
All53 Skin Conditioning53 Hair Conditioning10 Solvent9 Humectant9 Fragrance8 Perfuming6 Viscosity Controlling5 Masking5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
Perfluorohexane
(Solvent)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
B
Glyceryl Stearate Citrate
(Skin Conditioning, Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
A
Cellulose
(Absorbent, Bulking Agent, Slip Modifier, Opacifying, Viscosity Controlling)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
Glycine Soja Oil
(Perfuming, Skin Conditioning, Skin Conditioning Emollient)
1
Alpha-Glucan Oligosaccharide
(Cleansing, Skin Conditioning, Smoothing)
1
Ectoin
(Buffering Agent, Skin Conditioning, Emollient)
1
Phytosphingosine
(Hair Conditioning, Skin Conditioning)
4
Perfluorodecalin
(Skin Conditioning, Solvent, Detangling)
Bisabolol
(Fragrance, Skin Conditioning, Soothing)
1
A
Maltodextrin
(Absorbent, Binding Agent, Emulsion Stabilising, Film Forming, Hair Conditioning, Skin Conditioning, Suspending Agent Nonsurfactant, Binding)
Pentafluoropropane
(Masking, Propellant, Solvent)
1
B
Sodium Stearoyl Glutamate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Emulsifying)
1
Saccharide Isomerate
(Humectant)
1
A
Allantoin
(Skin Conditioning, Skin Protecting, Soothing)
Good for Oily Skin
Good for Oily Skin
Good for Sensitive Skin
Good for Sensitive Skin
PARFUM
(Fragrance, Perfuming)
1
B
Sodium PCA
(Hair Conditioning, Humectant, Antistatic Agent, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
9
A
Retinol
(Skin Conditioning)
Bad for Sensitive Skin
Bad for Sensitive Skin
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
2
Alcohol
(Antifoaming Agent, Antimicrobial, Astringent, Masking, Solvent, Viscosity Controlling)
Bad for Dry Skin
Bad for Dry Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
Lactobacillus Ferment
(Skin Conditioning)
Hamamelis Virginiana Extract
(Anti Sebum, Astringent, Skin Conditioning)
Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient)
1
A
Beta-Glucan
(Bulking Agent, Skin Conditioning)
4
B
Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
A
Hydrogenated Phosphatidylcholine
(Skin Conditioning, Emulsifying, Surfactant)
2
3
Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Antistatic Agent, Emollient)
Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling)
1
Collagen
(Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
Zingiber Officinale Root Extract
(Fragrance, Perfuming, Skin Conditioning, Tonic)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Sodium Acetylated Hyaluronate
(Humectant)
1
A
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking)
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
1
Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning)
Hydrolyzed Sodium Hyaluronate
(Skin Conditioning)
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
Magnolia Officinalis Bark Extract
(Antimicrobial, Skin Conditioning)
1
Paeonia Lactiflora Root Extract
(Skin Conditioning)
1
Cyclotetrapeptide-24 Aminocyclohexane Carboxylate
(Antioxidant)
Acetyl Heptapeptide-9
(Skin Conditioning)
4
Colloidal Gold
(Antimicrobial, Skin Conditioning)
1
Dipeptide Diaminobutyroyl Benzylamide Diacetate
(Skin Conditioning)
1
Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate
(Skin Conditioning)
1
Magnesium Chloride
(Viscosity Controlling)
6
Limonene
(Deodorant, Perfuming, Solvent)
Allergens
Allergens

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

Hyaluronic Acid
Hydrates by attracting and holding water.
Peptides
Supports skin hydration and improves firmness.
Antioxidants
Shields skin from free radical damage.
Retinoid
Visibly reduces the signs of aging.
Vitamin E
Protects skin and soothes irritation.
Niacinamide
Strengthens, smooths, and brightens skin.
Ceramides
Locks in moisture and supports skin barrier.
Ectoin
Protects against environmental stress and aging.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Redness ReducingSoothes visible redness and calms irritation.
Reduces IrritationEases discomfort and supports skin resilience.
Anti-AgingSoftens lines and helps skin look youthful.
Scar HealingImproves the look of marks and scars.
Dark SpotsFades dark spots for even skin tone.
BrighteningRestores radiance to dull, tired skin.

Concerns

Contains eu allergen
Not fungal acne (malassezia) safe
Retinol — higher EWG
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Perfluorohexane
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Cellulose
Absorbent, Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentBulking agentSlip modifierOpacifyingViscosity controlling
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Glycine Soja Oil
Perfuming, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A PerfumingSkin conditioningSkin conditioning emollient
Alpha-Glucan Oligosaccharide
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CleansingSkin conditioningSmoothing
Ectoin
Buffering agent, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Buffering agentSkin conditioningEmollient
Phytosphingosine
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning
Perfluorodecalin
Skin conditioning, Solvent
Low-to-moderate hazard.Read moreShow less
EWG 4 Skin conditioningSolventDetangling
Bisabolol
Fragrance, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceSkin conditioningSoothing
Maltodextrin
Absorbent, Binding agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentBinding agentEmulsion stabilisingFilm formingHair conditioningSkin conditioningSuspending agent - nonsurfactantBinding
Pentafluoropropane
Masking, Propellant
Limited public safety data.Read moreShow less
EWG N/A MaskingPropellantSolvent
Sodium Stearoyl Glutamate
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningSkin conditioningSurfactant - cleansingagentEmulsifying
Saccharide Isomerate
Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Humectant
+ 26 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Glyceryl Stearate Citrate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifying Fungal-acne trigger
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
Allantoin
Skin conditioning, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSkin protectingSoothing Good for Oily SkinGood for Sensitive Skin
Sodium PCA
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Hair conditioningHumectantAntistatic agentSkin conditioning Good for Dry Skin
Retinol
Skin conditioning
Potentially a skin irritantRead moreShow less
EWG 9 CIR A Skin conditioning Bad for Sensitive Skin
Alcohol
Antifoaming agent, Antimicrobial
Causes moisture evaporation - prone to dry out skinRead moreShow less
EWG 2 Antifoaming agentAntimicrobialAstringentMaskingSolventViscosity controlling Bad for Dry SkinBad for Sensitive Skin
Lactic Acid
Exfoliant, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B ExfoliantFragranceHumectantPh adjusterSkin-conditioning agent -humectantSkin conditioningBuffering agent Bad for Sensitive Skin
Collagen
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning Good for Dry Skin
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Limonene
Deodorant, Perfuming
Moderate-hazard ingredient.Read moreShow less
EWG 6 DeodorantPerfumingSolvent Allergens

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Evening: Use at night — start 2–3× a week and build up as your skin tolerates it.
  • 3 Wear SPF the next day: Acids and retinoids increase sun sensitivity — daily sunscreen is a must while using this.

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

Trust & honesty

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Often avoided
Retinoids (Vitamin A) (Retinol)

Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.

This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.

Effective levels — general guide

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

Retinoids (Vitamin A) 0.01–1%

Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.

Retinol

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

AHA (acid exfoliant) 5–10% (OTC)

OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.

Lactic Acid

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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