NEW
new-release
new-release
new-release
new-release
new-release
5.0 , 4 reviews
New

Composition No. 1 Serum

Overnight optimising serum

The gold standard in peptide serums, Composition No. 1 is the definitive expression of the AUTEUR skincare philosophy; optimised for ultimate skin repair and rejuvenating performance.

Bringing together over 40 ground-breaking and high-performance active ingredients to rescue and revitalise distressed, tired and damaged skin, including SYN®-AKE Peptide, SYN®-HYCAN Peptide, Gold Pro-Collagen Peptide, Liquid Oxygen, Encapsulated Retinol, Pentavitin®, Hyaluronic Acid and Niacinamide, this overnight serum unites an unmatched symphony of Liquid Oxygen, peptides and antioxidants to enhance cellular regeneration, restore optimal skin functions, and reveal a healthier appearance.

Like no other serum, Composition No.1  performs a multitude of advanced skin renewal functions while you sleep, harnessing the skin’s innate overnight repair process to accelerate repair and restore volume, firmness, density, and a healthier state of equilibrium.

Size:

Features

Features

Cellular Renewal
90
9/10
Collagen Support
90
9/10
Firmness & Elasticity
80
8/10
Skin Density & Volume
80
8/10
Barrier Strengthening
50
5/10
Hydration
20
2/10
Radiance / Brightening
40
4/10
Texture Refinement
40
4/10
Line & Wrinkle Reduction
90
9/10
Antioxidant Protection
50
5/10

Active Ingredients

Active Ingredients

Gold Pro-Collagen Peptide

Next-generation peptide complex that enhances collagen synthesis, delivering firmer, more lifted skin while improving elasticity.

Liquid Oxygen

Optimises oxygen delivery to skin cells, accelerating repair and regeneration while boosting collagen production and luminosity.

SYN®-AKE Peptide

Precision peptide that visibly relaxes expression lines, revealing firmer, smoother skin with an immediate tightening effect.

Ectoin

A multifunctional extremolyte that protects skin from environmental stress, locks in hydration, and reduces visible inflammation.

Encapsulated Retinol

Otherwise known as Vitamin A, which delivers the benefits of Retinol with enhanced stability and reduced irritation, accelerating cell turnover and collagen synthesis for a visibly refined texture.

Ceramide Complex

Skin-identical blend of ceramides I, II, III, IV, and VI that reinforces the skin barrier, preventing moisture loss while enhancing elasticity and resilience.

Hyaluronic Complex

Multi-molecular blend of five micro-low to high molecular weights of hyaluronic acid, providing deep, long-lasting hydration while supporting skin elasticity.

Niacinamide

Reveals brighter, more even skin while reinforcing the barrier and minimising visible pores, fine lines, and discoloration.

Pentavitin

Moisture-binding complex that delivers 72-hour hydration, strengthening barrier functions and reducing irritation.

Probiotic Compound

Balances skin’s microbiome to enhance clarity, calm irritation, and reveal a healthier complexion.

Ingredients

Aqua/Water, Perfluorohexane, Glycerin, Pentylene Glycol, Glyceryl Stearate Citrate, Cellulose, Niacinamide, Panthenol, Glycine Soja Oil, Alpha-Glucan Oligosaccharide, Ectoin, Phytosphingosine, Perfluorodecalin, Bisabolol, Maltodextrin, Pentafluoropropane, Sodium Stearoyl Glutamate, Saccharide Isomerate, Allantoin, Parfum/Fragrance, Sodium PCA, Xanthan Gum, Retinol, Tocopherol, Alcohol, Lactobacillus Ferment

Hamamelis Virginiana Bark Leaf Extract, Helianthus Annuus Seed Oil, BetaGlucan, Lactic Acid, Caprylic/Capric Triglyceride, Hydrogenated Phosphatidylcholine, Lecithin, Butyrospermum Parkii Butter, Collagen, Citric Acid, Zingiber Officinale Root Extract, Sodium Hyaluronate, Sodium Acetylated Hyaluronate, Sodium Citrate, Squalane, Sodium Hyaluronate Crosspolymer, Hydrolyzed Sodium Hyaluronate, Ceramide NP, Magnolia Officinalis Bark Extract, Paeonia Lactiflora Root Extract, Cyclotetrapeptide-24 Aminocyclohexane Carboxylate, Acetyl Heptapeptide-9, Colloidal Gold, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Tetradecyl Aminobutyroylvalylaminobutyric Urea Triflouroacetate, Magnesium Chloride, Limonene.

How to use

How to use

When

  • In the evening, after cleansing and toning
  • Apply every other night initially, gradually increasing to every night if desired

How

  • Apply 2-3 pumps to the face, neck and décolleté
  • Follow with a complimentary cream

Expert guidance

  • For overnight use only (contains retinol)
  • Not advised for use during pregnancy
  • May be used seasonally as a curative treatment
  • Balance skin with a hydration focused routine on alternate evenings and in morning regimens
EXPLORE ADVANCED GUIDANCE
Notify message

Leave your email where you would like to receive notification of arrival. We will notify you immediately when the product is in stock.

Discover transformative
active ingredients

Experience the power of intelligent neurotransmitter-inhibiting peptides, which relax deep-lying micro-muscles to release, smooth and lift horizontal and lateral lines while supporting natural collagen synthesis to prevent further wrinkle formation.

SEE ALL INGREDIENTS
  • Gold Pro-Collagen Peptide

    How it works

    A next-generation peptide complex that enhances collagen synthesis, delivering firmer, more lifted skin while improving elasticity.

  • Liquid Oxygen

    How it works

    Optimises oxygen delivery to skin cells, accelerating repair and regeneration while boosting collagen production and luminosity.

  • SYN®-AKE Peptide

    How it works

    A precision peptide that visibly relaxes expression lines, revealing firmer, smoother skin with an immediate tightening effect.

  • Ectoin

    How it works

    A multifunctional extremolyte that protects skin from environmental stress, locks in hydration, and reduces visible inflammation.

  • Encapsulated Retinol

    How it works

    Delivers the benefits of retinol with enhanced stability and reduced irritation, accelerating cell turnover and collagen synthesis for a visibly refined texture.

  • Ceramide Complex

    How it works

    A skin-identical blend of ceramides I, II, III, IV, and VI that reinforces the skin barrier, preventing moisture loss while enhancing elasticity and resilience.

  • Hyaluronic Complex

    How it works

    A multi-molecular blend of five micro-low to high molecular weights of hyaluronic acid, providing deep, long-lasting hydration while supporting skin elasticity.

  • Niacinamide

    How it works

    Reveals brighter, more even skin while reinforcing the barrier and minimising visible pores, fine lines, and discoloration.

  • Pentavitin

    How it works

    A moisture-binding complex that delivers 72-hour hydration, strengthening barrier functions and reducing irritation.

  • Probiotic Compound

    How it works

    Balances skin’s microbiome to enhance clarity, calm irritation, and reveal a healthier complexion.

Discover transformative
active ingredients

Experience the power of intelligent neurotransmitter-inhibiting peptides, which relax deep-lying micro-muscles to release, smooth and lift horizontal and lateral lines while supporting natural collagen synthesis to prevent further wrinkle formation.

Gold Pro-Collagen Peptide

How it works

A next-generation peptide complex that enhances collagen synthesis, delivering firmer, more lifted skin while improving elasticity.

Liquid Oxygen

How it works

Optimises oxygen delivery to skin cells, accelerating repair and regeneration while boosting collagen production and luminosity.

SYN®-AKE Peptide

How it works

A precision peptide that visibly relaxes expression lines, revealing firmer, smoother skin with an immediate tightening effect.

Ectoin

How it works

A multifunctional extremolyte that protects skin from environmental stress, locks in hydration, and reduces visible inflammation.

Encapsulated Retinol

How it works

Delivers the benefits of retinol with enhanced stability and reduced irritation, accelerating cell turnover and collagen synthesis for a visibly refined texture.

Ceramide Complex

How it works

A skin-identical blend of ceramides I, II, III, IV, and VI that reinforces the skin barrier, preventing moisture loss while enhancing elasticity and resilience.

Hyaluronic Complex

How it works

A multi-molecular blend of five micro-low to high molecular weights of hyaluronic acid, providing deep, long-lasting hydration while supporting skin elasticity.

Niacinamide

How it works

Reveals brighter, more even skin while reinforcing the barrier and minimising visible pores, fine lines, and discoloration.

Pentavitin

How it works

A moisture-binding complex that delivers 72-hour hydration, strengthening barrier functions and reducing irritation.

Probiotic Compound

How it works

Balances skin’s microbiome to enhance clarity, calm irritation, and reveal a healthier complexion.
SEE ALL INGREDIENTS

A specialised overnight treatment for advanced skin regeneration that delivers transformative results from every possible skincare angle.

Address volume loss through advanced collagen regeneration

Explore biomimetic peptides for advanced collagen regeneration engineered alongside the most potent antioxidants available, and finished with Liquid Oxygen.


*8 wk clinical trial results

01

Increases skin firmness and density

Skin cells are comprehensively rejuvenated and collagen synthesis boosted with intelligent, advanced peptides

02

Reduces wrinkles

Wrinkles were reduced by up to 55% with nightly application in a 4-week clinical trial

03

Heals and repairs skin damage and distress

Skin’s natural protective barrier is repaired and restored to prevent water loss with Skin Lipid Matrix

04

Enhances overall skin health

Skin’s healing and reparative functions are optimised with Liquid Oxygen, whilst Niacinamide performs a multitude of highly nourishing actions

Address volume loss through advanced collagen regeneration

Explore biomimetic peptides for advanced collagen regeneration engineered alongside the most potent antioxidants available, and finished with Liquid Oxygen.


*8 wk clinical trial results

Average improvement of

+21%

In elasticity, as measured by Cutometer MPA580*

Up to

55%

Reduction in wrinkle depth and length*

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 Repair

Explore how to use

Composition No. 1 Serum
AFTER 4 WEEKS
  • Reduction in surface lines
  • Visible improvement in deeper set wrinkles
  • Smoother, more even texture
  • Brighter, more radiant complexion

«The transformation has been remarkable—my skin feels firmer, smoother, and luminous in a way I hadn’t seen in years.»

Before
After

Images taken 4 weeks apart with nightly use

«The transformation has been remarkable—my skin feels firmer, smoother, and luminous in a way I hadn’t seen in years.»

Complete your routine

new-release
new-release
Definitive Eye Cream
$420.00
$420.00

Multi-faceted eye renewal treatment

new-release
new-release
Definitive Density Cream
From $325.00
From $325.00

Firming and regenerative formula

new-release
new-release
Definitive Restoration Cream
From $280.00
From $280.00

Super-nourishing formula

new-release
new-release
Definitive Renewal Cream
From $285.00
From $285.00

Ultra-rich firming formula

new-release
new-release
Definitive Neck and Décolleté Cream
$340.00
$340.00

Rich cream for restoration and repair

NEW
new-release
new-release
Superlative Cream Voyage
$425.00
$425.00

Rich, reparative cream for dermal renewal

Editorial Coverage

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.”

read article
Explore more

Book a consultation

Schedule a consultation with our expert who will find the right routine skincare for you.

Book a consultation

The Definitive
Collection

High-active compositions elevating regenerative skincare to an art form - and your deepest authentic beauty to the surface

Explore collection
new-release
new-release
Definitive Enzyme Cleanser
$170.00
$170.00

Brightening and exfoliating treatment

new-release
new-release
Definitive Eye Cream
$420.00
$420.00

Multi-faceted eye renewal treatment

new-release
new-release
Definitive Neck and Décolleté Cream
$340.00
$340.00

Rich cream for restoration and repair

new-release
new-release
Definitive Renewal Serum
$390.00
$390.00

Collagen-targeting peptide complex

FAQ

When should Composition No. 1 be used?

This is an overnight-only treatment, designed for evening use every other night. Clinical testing has shown this schedule is able to deliver optimal results.

Can Composition No. 1 be layered with other serums?

Yes, but it is not required. Composition No. 1 is a complete corrective treatment on its own. It may be applied after Line Serum for an additional tightening and firming effect, or after Hyaluron Activator to lock in hydration and amplify the results with complimentary growth factor activity. Composition No. 1 should not be combined with other products containing retinol.

What should I use in the morning if I apply this at night?

Morning routines should focus on hydration, collagen support, and antioxidant protection to balance the evening treatment. A hyaluronic, collagen-activating, or antioxidant serum layered with a moisturizer and sunscreen is ideal.

Can I use Composition No. 1 around the eyes?

No. It should not be applied directly on the orbital bone or too close to the eyes.

Can it be used on the neck?

It is not recommended for use on the delicate skin of the neck and décolleté, which is more sensitive to retinoids.

How is Composition No. 1 different from Retinol Serum?

Both formulas contain retinol, but their functions are different. Retinol Serum focuses on resurfacing, smoothing texture, and improving tone. Composition No. 1 is a more advanced, multi-corrective treatment that combines encapsulated retinol with peptides for improvements in firmness, density, and advanced collagen regeneration, and 10% Liquid Oxygen for cellular healing and repair. It addresses multiple layers of skin health - structure, resilience, and repair - going well beyond the scope of a traditional retinol serum.

Where can I get personalized guidance for using this product?

AUTEUR offers one-to-one consultations to help tailor your skincare routine. If you would like assistance incorporating Composition No. 1 or balancing your regimen, email us or book a personalized consultation.

Find your routine

Still unsure? Take our quiz to discover which Auteur products are right for you.

Take a quiz

Composition No. 1 Serum

Overnight optimising serum
ADD TO CART
Choose equipment
Notify me when it arrives

Leave your email where you would like to receive notification of arrival. We will notify you immediately when the product is in stock.