Definitive Line Serum
Benefits
The AUTEUR Definitive Line Serum is a high-performance anti-ageing treatment designed to visibly smooth expression lines, restore firmness, and enhance overall skin density. Engineered to mimic the effects of aesthetic procedures, this advanced formula targets both the formation and depth of wrinkles, delivering immediate tightening alongside long-term structural improvement.
At the core of the formula is SYN®-AKE peptide (Dipeptide Diaminobutyroyl Benzylamide Diacetate), a neuropeptide that helps relax micro-muscle contractions responsible for expression lines, visibly smoothing and softening wrinkles. This is supported by Cyclopeptide-5, which stimulates collagen and elastin synthesis to improve firmness and skin resilience over time.
A powerful multi-molecular Hyaluronic Complex—including Sodium Hyaluronate, Sodium Acetylated Hyaluronate, and Hydrolyzed Hyaluronic Acid—delivers deep, multi-layer hydration, instantly plumping the skin while restoring elasticity and volume. Film-forming agents such as Pullulan create an immediate tightening effect, enhancing the skin’s smoothness and refined appearance.
LIFTISS® (Baobab pulp extract) provides an instant lifting and tightening sensation, reinforcing the skin’s structure and delivering a visibly firmer, more sculpted look. At the same time, Arginine Ferulate supports cellular detoxification and metabolism, helping to reduce the formation of new wrinkles and maintain skin vitality.
A comprehensive antioxidant complex—featuring Resveratrol, Ectoin, Ergothioneine, Lycopene, and Ascorbic Acid (Vitamin C)—works to defend against oxidative stress, pollution, and glycation, preserving collagen integrity and supporting cellular repair. Botanical extracts such as Watermelon, Raspberry, Apple, and Magnolia further enhance protection while promoting a brighter, more even complexion.
Humectants including Glycerin, Saccharide Isomerate, and Mannitol reinforce hydration and barrier function, ensuring lasting moisture retention and skin comfort.
Together, these clinically advanced actives deliver a comprehensive approach to skin ageing—relaxing expression lines, firming and lifting the skin, and protecting against future damage.
The AUTEUR Definitive Line Serum is a high-performance anti-ageing treatment designed to visibly smooth expression lines, restore firmness, and enhance overall skin density. Engineered to mimic the effects of aesthetic procedures, this advanced formula targets both the formation and depth of wrinkles, delivering immediate tightening alongside long-term structural improvement.
At the core of the formula is SYN®-AKE peptide (Dipeptide Diaminobutyroyl Benzylamide Diacetate), a neuropeptide that helps relax micro-muscle contractions responsible for expression lines, visibly smoothing and softening wrinkles. This is supported by Cyclopeptide-5, which stimulates collagen and elastin synthesis to improve firmness and skin resilience over time.
A powerful multi-molecular Hyaluronic Complex—including Sodium Hyaluronate, Sodium Acetylated Hyaluronate, and Hydrolyzed Hyaluronic Acid—delivers deep, multi-layer hydration, instantly plumping the skin while restoring elasticity and volume. Film-forming agents such as Pullulan create an immediate tightening effect, enhancing the skin’s smoothness and refined appearance.
LIFTISS® (Baobab pulp extract) provides an instant lifting and tightening sensation, reinforcing the skin’s structure and delivering a visibly firmer, more sculpted look. At the same time, Arginine Ferulate supports cellular detoxification and metabolism, helping to reduce the formation of new wrinkles and maintain skin vitality.
A comprehensive antioxidant complex—featuring Resveratrol, Ectoin, Ergothioneine, Lycopene, and Ascorbic Acid (Vitamin C)—works to defend against oxidative stress, pollution, and glycation, preserving collagen integrity and supporting cellular repair. Botanical extracts such as Watermelon, Raspberry, Apple, and Magnolia further enhance protection while promoting a brighter, more even complexion.
Humectants including Glycerin, Saccharide Isomerate, and Mannitol reinforce hydration and barrier function, ensuring lasting moisture retention and skin comfort.
Together, these clinically advanced actives deliver a comprehensive approach to skin ageing—relaxing expression lines, firming and lifting the skin, and protecting against future damage.
Read less30 ml
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More Info
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Who it is for
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How to Apply
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Ingredients
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Smell & Texture
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About the Brand
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Who it is for
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How to Apply
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Ingredients
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Smell & Texture
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About the Brand
For you if
Not For you if
No other brand marries high-end German skincare technology with such a breadth of actives to deliver transformative results. Each product boasts an unprecedented concentration of ingredients, so every pump provides a multifaceted treatment that tackles multiple skin concerns at once. This clinically driven approach yields dramatic improvements where conventional routines plateau, delivering visible regeneration and smoothing from the very first application.
AUTEUR’s formulations are rooted in biomedical science and engineered for performance. Advanced encapsulated peptide technology delivers potent molecules deep into the skin for optimal repair. Each formula unites growth factors, antioxidants, probiotics, and ceramides to stimulate collagen, calm inflammation, and fortify the barrier, accelerating renewal and delivering cumulative, clinically proven results.
The Benefits
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Injectable Effect
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Regenerating
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Anti-Wrinkle
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Skin Barrier Strengthening
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Firming & Lifting
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Plumping
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Anti-Pigmentation
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Scar-Repairing
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Brightening (Energising)
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Reduces Trans Epidermal Water Loss
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Hydrating
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Antioxidant
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Anti-Ageing (Glycation)
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Photo-Protecting
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Anti-Inflammatory
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Anti-Redness
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Chemical Exfoliation
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Microbiome Balancing
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Detoxifying
Injectable Effect
Regenerating
Anti-Wrinkle
Skin Barrier Strengthening
Firming & Lifting
Plumping
Anti-Pigmentation
Scar-Repairing
Brightening (Energising)
Reduces Trans Epidermal Water Loss
Hydrating
Antioxidant
Anti-Ageing (Glycation)
Photo-Protecting
Anti-Inflammatory
Anti-Redness
Chemical Exfoliation
Microbiome Balancing
Detoxifying
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+
Injectable Effect
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+
Regenerating
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+
Anti-Wrinkle
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+
Skin Barrier Strengthening
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+
Firming & Lifting
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+
Plumping
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+
Anti-Pigmentation
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+
Scar-Repairing
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+
Brightening (Energising)
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+
Reduces Trans Epidermal Water Loss
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+
Hydrating
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+
Antioxidant
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+
Anti-Ageing (Glycation)
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Photo-Protecting
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Anti-Inflammatory
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Anti-Redness
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Chemical Exfoliation
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Microbiome Balancing
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Detoxifying
Active Ingredients
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SYN®-AKE
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Cyclopeptide-5
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5 Hyaluronic Complex
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LIFTISS®
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Arginine
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Resveratrol
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Ectoin
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Complex of Peach Tree Leaf, Apple & Raspberry Extracts
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Saccharide Isomerate (PENTAVITIN)
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Bioplasma™ FA
SYN®-AKE
Cyclopeptide-5
5 Hyaluronic Complex
LIFTISS®
Arginine
Resveratrol
Ectoin
Complex of Peach Tree Leaf, Apple & Raspberry Extracts
Saccharide Isomerate (PENTAVITIN)
Bioplasma™ FA
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SYN®-AKE
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Cyclopeptide-5
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5 Hyaluronic Complex
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LIFTISS®
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Arginine
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Resveratrol
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Ectoin
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Complex of Peach Tree Leaf, Apple & Raspberry Extracts
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Saccharide Isomerate (PENTAVITIN)
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Bioplasma™ FA
Liftiss®
Spotlight
Liftiss®
Frequently Asked Questions
When should I apply this serum in my routine?
Can I layer this serum?
Can I use this serum day and night?
Can I use this product if I have oily skin?
Can I use this product if I have dry skin?
Can I use this product if I have combination skin?
Can I use this product if I have sensitive skin?
Can I use this product if I have eczema/Psoriasis?
Can I use this product if I have rosacea?
Can this product be used during pregnancy and whilst breast feeding?
Why I love it
X Natalie K-F
Founder, Embassy of Beauty











