NEW
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5.0 , 6 reviews
New

Definitive Collagen Activator Serum

Antioxidant-rich repair serum

A transformative collagen serum empowered by next-generation peptide technology and antioxidant protection to firm the skin, refine its structure, and inhibit its degradation.

Formulated with the very best peptides for collagen production, this brightening serum mimics the skin’s natural collagen production process to reduce the appearance of fine lines and wrinkles and enhance skin elasticity. At the same time, antioxidants, alongside bio-optimised and anti-inflammatory agents, protect skin against the environmental aggressors that accelerate skin ageing, whilst reducing senescent cells and, in turn, signs of inflammageing.

With daily use, as fine lines and wrinkles fade, skin appears smoother and healthier, and becomes more resilient, with a brighter, more radiant natural state.

Size:

Features

Features

Cellular Renewal
60
6/10
Collagen Support
90
9/10
Skin Density & Volume
80
8/10
Barrier Strengthening
80
8/10
Hydration
80
8/10
Radiance / Brightening
60
6/10
Antioxidant Protection
80
8/10
Soothing / Calming
60
6/10

Active Ingredients

Active Ingredients

Growth Factor Tripeptide

Mimics the body’s natural collagen production process via TGF-β, protecting collagen from degradation and restoring a smoother, firmer appearance.

Glycerine

Hydrating humectant that improves moisture retention, enhances skin elasticity, and provides a smooth, radiant complexion across all skin types.

Guava Phyto-extract

Directly reduces senescence – the accumulation of damaged cells – minimising inflammation while brightening and revitalising the skin.

Peony Root Extract

Brightening and anti-inflammatory super antioxidant that reduces hyperpigmentation and restores a more even, radiant skin tone.

All the ingredients

Aqua / Water, Polyglyceryl-2 Stearate, Glyceryl Stearate, Stearyl Alcohol, Octyldodecyl Oleate, Octyldodecyl Stearoyl Stearate, Polyhydroxystearic Acid, Octyldodecanol, Propanediol, Psidium Guajava Leaf Extract, Saccharomyces Lysate Extract, Glycerin, Palmitoyl Tripeptide-5, Dipeptide Diamminobutyroyl Benzamide Diacetate, Gigartina Stellata Extract, Phenoxyethanol.

How to use

How to use

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Clinically advanced actives to halt inflammageing

Discover the advanced collagen-activating peptides that intelligently mimic the body’s own mechanisms to produce, protect and stabilise collagen within the skin.

  • Growth Factor Tripeptide

    How it works

    Mimics the body’s natural collagen production process via TGF-β, protecting collagen from degradation and restoring a smoother, firmer appearance.

  • Glycerine

    How it works

    Hydrating humectant that improves moisture retention, enhances skin elasticity, and provides a smooth, radiant complexion across all skin types.

  • Guava Phyto-Extract

    How it works

    Directly reduces senescence – the accumulation of damaged cells – minimising inflammation while brightening and revitalising the skin.

  • Peony Root Extract

    How it works

    Brightening and anti-inflammatory super antioxidant that reduces hyperpigmentation and restores a more even, radiant skin tone.

Clinically advanced actives to halt inflammageing

Discover the advanced collagen-activating peptides that intelligently mimic the body’s own mechanisms to produce, protect and stabilise collagen within the skin.

Growth Factor Tripeptide

How it works

Mimics the body’s natural collagen production process via TGF-β, protecting collagen from degradation and restoring a smoother, firmer appearance.

Glycerine

How it works

Hydrating humectant that improves moisture retention, enhances skin elasticity, and provides a smooth, radiant complexion across all skin types.

Guava Phyto-Extract

How it works

Directly reduces senescence – the accumulation of damaged cells – minimising inflammation while brightening and revitalising the skin.

Peony Root Extract

How it works

Brightening and anti-inflammatory super antioxidant that reduces hyperpigmentation and restores a more even, radiant skin tone.

As cells age at a biological level, they loose their ability to divide and function properly - staying active and harming healthy cells by continuing to release chemicals that trigger inflammation.

Reduce and protect against Senescence

Telomere Shortening: Every time a cell divides, the protective caps at the end of chromosomes, called telomeres, shorten. When telomeres become too short, the cell can no longer divide and becomes senescent.

DNA Damage: Accumulation of DNA damage over time, caused by environmental factors like UV radiation and pollution, as well as internal factors like oxidative stress, can trigger cellular senescence.

Oxidative Stress: Reactive oxygen species (ROS) and free radicals cause damage to cellular components, leading to premature cellular aging.

*30 day clinical trial of Growth Factor Tripeptide in combination with Guava Phyto Extract

01

Reduces wrinkle depth and improves skin density

Collagen production is boosted and its breakdown prevented, minimising wrinkles and improving skin firmness and elasticity

02

Targets environmental and UV-induced cellular damage

Skin brightness and radiance is maintained with bio-optimised antioxidants

03

Controls oil and maintains a balanced skin barrier

Skin remains shine-free and its hydration improved with mattifying technology

04

Restores a smoother, brighter skin texture

Skin firmness and elasticity is enhanced with an elevated peptide complex

Reduce and protect against Senescence

Telomere Shortening: Every time a cell divides, the protective caps at the end of chromosomes, called telomeres, shorten. When telomeres become too short, the cell can no longer divide and becomes senescent.

DNA Damage: Accumulation of DNA damage over time, caused by environmental factors like UV radiation and pollution, as well as internal factors like oxidative stress, can trigger cellular senescence.

Oxidative Stress: Reactive oxygen species (ROS) and free radicals cause damage to cellular components, leading to premature cellular aging.

*30 day clinical trial of Growth Factor Tripeptide in combination with Guava Phyto Extract

Up to

+ 12%

Increase in skin firmness*

Up to

-20%

Reduction in wrinkle depth*

Average of

+30%

Increase in hydration*

Definitive Collection
Serum Finder

Composition No. 1
Renewal Serum
Line Serum
Retinol Serum
Hyaluron Activator
Collagen Activator
Light Hydration
Intensive Hydration
Brightens and Evens Tone
Improves Texture
Antioxidant Protection
Promotes Collagen Regeneration
Contains Retinol
Liquid Oxygen Complex (Perflurocarbons) increases bio-available oxygen
Myo-relaxant Peptides
Advanced Wrinkle Treatment

Editorial Features

AUTEUR is the skincare brand the experts are watching

“The German skincare brand, beloved by aestheticians, activates your skin’s own best function and appearance . Featuring over 100 active ingredients from around the world, all working in synchrony to accelerate cellular repair, German skincare brand AUTEUR is delivering next level results with its product line. Its encapsulated peptide delivery systems offer enhanced bioavailability and repair capabilities and lower weight molecular densities for better ingredient absorption.”

read article

If You Like Glowy, Dewy Skin, This Ultra-Luxe Brand Is Your New Secret Weapon

“I always approach luxury beauty with a healthy dose of skepticism. As a beauty editor with years of experience, I can still only count on one hand the number of high-end brands I use and love. While many provide some benefits, I don't always think it's enough to justify an insanely high price tag. In this case, however, I can say that aesthetician-loved brand Auteur is well worth the money.”

read article

These Are The Best Skin Care Products, According to Vogue Editors

“It feels like the Hermès of skin care for the price and quality, though the products don’t have to be used every day (or night, which I prefer) to work, and the Definitive Hyaluron Activator Serum in this Hydrate set seems to already be a star for mirror-finish skin.”

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Collagen-targeting peptide complex

FAQ

How does Collagen Activator Serum work?

The serum combines collagen-stimulating peptides with antioxidants and bio-actives to rebuild skin density and strengthen elasticity. Growth Factor Tripeptide mimics the body’s own collagen-producing signal (TGF-β), encouraging fibroblasts to generate new structural proteins. Guava Phyto-Extract directly reduces senescent cells - the “zombie” cells that remain in the skin releasing inflammatory signals - while Peony Root Extract calms inflammation, brightens, and protects against environmental aggressors. Together, these actions visibly restore firmness, reduce wrinkles, and preserve long-term skin vitality.

What are senescent cells, and why does this matter?

Senescent cells are damaged skin cells that have stopped dividing but remain in tissue. Instead of repairing, they release inflammatory molecules that speed collagen breakdown, slow healing, and contribute to visible signs of aging such as wrinkles, sagging, and dullness. This process is known as “inflammageing.” Collagen Activator Serum helps counteract it by using Guava Phyto-Extract and Peony Root Extract to reduce senescent cell accumulation and calm inflammation, while peptides and growth factors support fresh collagen production.

How is Collagen Activator Serum different from Hyaluron Activator Serum?

Hyaluron Activator is primarily water-binding and deeply hydrating, while Collagen Activator is structural - focused on rebuilding firmness, density, and resilience, and has a higher concentration of antioxidants.. Many clients use both: Collagen Activator in the morning to strengthen skin structure and Hyaluron Activator in the evening to replenish hydration and calm reactivity. Both could be used for morning and / or evening use.

Is it suitable for sensitive or oil-rich skin?

Yes. The formula is a mid-weight texture and oil-free, making it suitable for acne-prone or oily skin. Soothing actives such as Peony Root Extract and glycerine help reduce irritation and balance hydration, while mattifying technology maintains a refined, shine-free finish.

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Definitive Collagen Activator Serum

Antioxidant-rich repair serum

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