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5.0 , 8 reviews
New

Definitive Hyaluron Activator Serum

An intensely hydrating Epidermal Growth Factor serum for dry or sensitive skin, charged with collagen-targeting peptides and skin-tightening amino acids to cultivate a visibly smoother and firmer skin structure.

Hyaluronic Acid, Allantoin and Thai Ginger Leaf Extract stand among the key active ingredients in this serum that work collaboratively to optimise skin hydration and water retention, while advanced Peptide and Amino Acid Complexes simultaneously enhance skin density, firmness and elasticity by stimulating collagen production and initiating the skin’s innate regenerative responses.

Skin is luxuriously moisturised and profoundly hydrated as signs of dehydration are eliminated and fine lines and wrinkles reduced, with a supple, rejuvenated and radiant finish.

Size:

Features

Features

Cellular Renewal
50
5/10
Collagen Support
60
6/10
Skin Density & Volume
70
7/10
Barrier Strengthening
60
6/10
Hydration
90
9/10
Texture Refinement
40
4/10
Line & Wrinkle Reduction
40
4/10
Soothing / Calming
40
4/10

Active Ingredients

Active Ingredients

Epidermal Growth Factor Complex

Activates skin regeneration and supports collagen, elastin, and hyaluronic acid production to visibly improve firmness, density, and elasticity.

Collagen-Organising Tetrapeptide

Optimises collagen network formation for a smoother, firmer appearance and enhanced structural resilience.

Scandinavian Red Algae

Supports natural hyaluronic acid production to visibly plump and smooth deep lines.

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.

Allantoin

Calms and hydrates the skin while supporting cell renewal, reducing irritation, and revealing a smoother texture.

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, Pentylene Glycol, Sodium Lactate, Sodium PCA, Urea, Xanthan Gum, Lactic Acid, Sodium Hyaluronate, Butylene Glycol, Allantoin, Alpinia Galanga Extract, Sodium Acetylated Hyaluronate, Caprylic/Capric Triglyceride, Caprylyl Glycol, Sodium Hyaluronate Crosspolymer, Acetyl Glutamine, Lecithin, Tripeptide-10 Citrulline, Hydrolyzed Sodium Hyaluronate, Magnolia Officinalis Bark Extract, Paeonia Lactiflora Root Extract, 1,2 Hexanediol, Bacillus/Folic Acid Ferment Extract, sh-Oligopeptide-1, sh-Oligopeptide-2, shPolypeptide-1, sh-Polypeptide-11, sh- Polypeptide-9

How to use

How to use

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Discover transformative
active ingredients

Experience the indulgent, multi-layered hydration of five molecular weights of Hyaluronic Acid, each carefully selected to rejuvenate and enhance the skin's natural radiance, restoring a firmer, more radiant finish.

  • Epidermal Growth Factor Complex

    How it works

    Activates skin regeneration and supports collagen, elastin, and hyaluronic acid production to visibly improve firmness, density, and elasticity.

  • Collagen-Organising Tetrapeptide

    How it works

    Optimises collagen network formation for a smoother, firmer appearance and enhanced structural resilience.

  • Scandinavian Red Algae

    How it works

    Supports natural hyaluronic acid production to visibly plump and smooth deep lines.

  • Hyaluronic Complex

    How it works

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

  • Allantoin

    How it works

    Calms and hydrates the skin while supporting cell renewal, reducing irritation, and revealing a smoother texture.

  • Peony Root Extract

    How it works

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

Discover transformative
active ingredients

Experience the indulgent, multi-layered hydration of five molecular weights of Hyaluronic Acid, each carefully selected to rejuvenate and enhance the skin's natural radiance, restoring a firmer, more radiant finish.

Epidermal Growth Factor Complex

How it works

Activates skin regeneration and supports collagen, elastin, and hyaluronic acid production to visibly improve firmness, density, and elasticity.

Collagen-Organising Tetrapeptide

How it works

Optimises collagen network formation for a smoother, firmer appearance and enhanced structural resilience.

Scandinavian Red Algae

How it works

Supports natural hyaluronic acid production to visibly plump and smooth deep lines.

Hyaluronic Complex

How it works

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

Allantoin

How it works

Calms and hydrates the skin while supporting cell renewal, reducing irritation, and revealing a smoother texture.

Peony Root Extract

How it works

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

This multifaceted serum’s sophisticated hydrating performance fulfils the key skin functions for tangible suppleness and a visible healthy glow

The vital protein for skin structure and elasticity

Leading in this serum’s skin firming and rejuvenating performance, EGF plays a crucial role in skin healing and maintaining tissue homeostasis - signalling cells to produce collagen and elastin for restoring and retaining skin structure and elasticity, while optimising radiance.

01

Deeply and intensely hydrates

Skin is hydrated throughout every layer with Hyaluronic Complex

02

Rebuilds collagen

Skin elasticity is improved and its firmness restored with a collagen-organising peptide

03

Reduces the appearance of fine lines and wrinkles

Cellular revitalisation and skin elasticity is enhanced with a sophisticated Growth Factor and Amino Acid Complex

04

Restores radiance

Skin exhibits renewed radiance thanks to comprehensive hydration alongside exfoliating AHA action from Lactic Acid

The vital protein for skin structure and elasticity

Leading in this serum’s skin firming and rejuvenating performance, EGF plays a crucial role in skin healing and maintaining tissue homeostasis - signalling cells to produce collagen and elastin for restoring and retaining skin structure and elasticity, while optimising radiance.

Definitive Collection
Serum Finder

Composition No. 1
Renewal Serum
Line Serum
Retinol Serum
Hyaluron Activator
Collagen Activator
Light Hydration
Intensive Hydration
Advanced Wrinkle Repair
Brightens and Evens Tone
Refines Texture
Antioxidant Protection
Promotes Collagen Regeneration
Contains Retinol
Liquid Oxygen Complex
Myo-relaxant Peptides (Instantly reduce surface lines)

Explore how to use

Definitive Hyaluron Activator Serum

Editorial Features

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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Auteur Is The Newest High Luxury Beauty Brand Rewriting The Skincare Narrative

“A week of use, shows improved skin elasticity. Wrinkles and fine lines are less visible, while surface is smoother and more vibrant. Lightweight and easy-absorb consistency make it ideal for both day and nighttime use. I like to apply a thin layer under a tinted SPF serum for naturally radiant skin all day. It leaves skin hydrated with an ultra subtle sheer finish. Most days, all you’ll even need is a pinch of blush.”

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

“This serum is so lightweight and absorbs into the skin so easily. Its sophisticated makeup boosts your skin's ability to produce more hyaluronic acid, a necessary component to keeping skin plump, hydrated, and line-free. My skin gets pretty dehydrated so this serum was an absolute gift from the skincare Gods. My skin just drinks it up every morning and, once again, it's so lightweight you barely even feel like you've put any product on at all. It also speeds up the regenerative process and contains peptides and growth factors that support new collagen production. If you're like me and also tend to deal with redness and inflammation, this formula also contains super soother allantoin (one of my favorite skincare ingredients) to calm the skin.”

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Collagen-targeting peptide complex

FAQ

How is this different from other hyaluronic acid serums?

Most hyaluronic serums rely on a single molecular weight that only hydrates the skin’s surface. Hyaluron Activator uses a multi-molecular complex of five sizes of hyaluronic acid to deliver moisture at every level of the skin, ensuring deep and lasting hydration. In addition, it is fortified with plant-derived Epidermal Growth Factor and collagen peptides, which actively rebuild density, elasticity, and firmness - making it both a hydration and anti-aging treatment.

Is it suitable for sensitive or reactive skin?

Yes. This serum was designed to comfort even reactive or irritated skin. Allantoin calms and softens, while Peony Root Extract reduces redness and restores balance. Because it is free of oils, it hydrates without clogging pores, making it equally effective for oily or acne-prone complexions.

Will it help with fine lines and wrinkles?

Yes. Multi-molecular hyaluronic acid visibly plumps fine dehydration lines right away. Over time, the plant-based Epidermal Growth Factor and collagen-organising peptides stimulate new collagen and elastin, reducing wrinkle depth and improving resilience.

Can it replace my moisturizer?

Not fully. Hyaluron Activator floods skin with water, but a moisturizer is still recommended to seal in hydration and deliver barrier lipids. For very dry or lipid-deficient skin, layer it under a nourishing AUTEUR cream.

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Definitive Hyaluron Activator Serum

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