Definitive Collagen Activator Serum

Auteur

Where to buy Possibly in stock

About this product

The Auteur Definitive Collagen Activator Serum is a serums, essence, ampoule. Our analysis of its 16 ingredients (14 low-risk) rates it Excellent (97/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
16
Low-risk
14
Fragrance
Fragrance-free
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 8/5
Good for dry skin
Glyceryl Stearate Stearyl Alcohol Octyldodecyl Stearoyl Stearate Octyldodecyl Oleate Octyldodecanol Glycerin Polyglyceryl-2 Stearate Saccharomyces Lysate Extract
Caution for dry skin
Stearyl Alcohol Glycerin Polyglyceryl-2 Stearate Polyhydroxystearic Acid Psidium Guajava Leaf Extract
Oily/Acne-Prone Skin 1/2
Good for oily/acne-prone skin
Psidium Guajava Leaf Extract
Caution for oily/acne-prone skin
Octyldodecyl Stearoyl Stearate Octyldodecyl Oleate
Sensitive Skin 2/4
Good for sensitive skin
Gigartina Stellata Extract Glycerin
Caution for sensitive skin
Stearyl Alcohol Octyldodecanol Glycerin Phenoxyethanol

Ingredients list

16 total
Lower hazard (1) Higher hazard (4)
All16 Skin Conditioning6 Emollient6 Solvent4 Emulsifying4 Fragrance4 Humectant3 Viscosity Controlling3 Viscosity Increasing Agent3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
B
Polyglyceryl-2 Stearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
A
Glyceryl Stearate
(Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
A
Stearyl Alcohol
(Emulsion Stabilising, Fragrance, Emulsifying, Surfactant, Foambooster, Viscosity Increasing Agent, Emollient, Foam Boosting, Masking, Opacifying, Refatting, Viscosity Controlling)
1
B
Octyldodecyl Oleate
(Skin Conditioning Agent Occlusive, Emollient)
1
A
Octyldodecyl Stearoyl Stearate
(Skin Conditioning Agent Occlusive, Viscosity Increasing Agent, Emollient, Viscosity Controlling)
1
Polyhydroxystearic Acid
(Suspending Agent Nonsurfactant, Emulsifying)
1
A
Octyldodecanol
(Fragrance, Skin Conditioning, Emollient, Perfuming, Solvent)
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
Psidium Guajava Leaf Extract
(Astringent, Skin Conditioning)
1
Saccharomyces Lysate Extract
(Humectant, Skin Conditioning)
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
Palmitoyl Tripeptide-5
(Skin Conditioning)
1
Dipeptide Diaminobutyroyl Benzylamide Diacetate
(Skin Conditioning)
1
Gigartina Stellata Extract
(Skin Protecting)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben

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.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Anti-AgingSoftens lines and helps skin look youthful.
Barrier RepairStrengthen and restore your skin's natural barrier.
Scar HealingImproves the look of marks and scars.
Skin TextureSmooths rough patches and refines texture.

Concerns

Contains paraben
Not fungal acne (malassezia) safe
May not suit oily/acne-prone skin
May not suit sensitive skin

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Polyglyceryl-2 Stearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifyingSurfactant
Stearyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceEmulsifyingSurfactant- foamboosterViscosity increasing agentEmollientFoam boostingMaskingOpacifyingRefattingViscosity controlling
Octyldodecyl Oleate
Skin-conditioning agent - occlusive, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin-conditioning agent - occlusiveEmollient
Octyldodecyl Stearoyl Stearate
Skin-conditioning agent - occlusive, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin-conditioning agent - occlusiveViscosity increasing agentEmollientViscosity controlling
Polyhydroxystearic Acid
Suspending agent - nonsurfactant, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 Suspending agent - nonsurfactantEmulsifying
Octyldodecanol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningEmollientPerfumingSolvent
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Psidium Guajava Leaf Extract
Astringent, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A AstringentSkin conditioning
Saccharomyces Lysate Extract
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Palmitoyl Tripeptide-5
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Dipeptide Diaminobutyroyl Benzylamide Diacetate
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Gigartina Stellata Extract
Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 Skin protecting
Glyceryl Stearate
Emollient, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientEmulsifying Fungal-acne trigger
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
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben

How to use

How to use

  • 1 Where it fits: Apply after toner and before moisturiser — thinnest to thickest.
  • 2 Morning & evening: Suitable for both AM and PM use.

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

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