A.C. Expert Serum

Atomy

Where to buy Possibly in stock

About this product

The Atomy A.C. Expert Serum is a serums, essence, ampoule. Our analysis of its 65 ingredients (44 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to dry and sensitive skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Serums, Essence, Ampoules
Ingredients
65
Low-risk
44
Fragrance
Fragrance-free
Origin
South Korea
Data updated
Jun 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 14/7
Good for dry skin
C12-15 Alkyl Benzoate Neopentyl Glycol Diheptanoate Dicaprylyl Carbonate Althaea Officinalis Leaf/Root Extract Prunus Mume Fruit Extract Sucrose Distearate Argania Spinosa Kernel Oil Butylene Glycol Pentaerythrityl Distearate Polyglyceryl-3 Methylglucose Distearate Fructooligosaccharides Hydrolyzed Hyaluronic Acid Cyclohexasiloxane Hydrogenated Poly(C6-14 Olefin)
Caution for dry skin
Centella Asiatica Extract Sodium Stearoyl Glutamate Sucrose Distearate Xanthan Gum Polyglyceryl-10 Stearate Polyglyceryl-3 Methylglucose Distearate Hydrogenated Lecithin
Oily/Acne-Prone Skin No data
Sensitive Skin 7/6
Good for sensitive skin
Sophora Flavescens Root Extract Laminaria Japonica Extract Madecassoside Centella Asiatica Extract Anthemis Nobilis Flower Extract Hydroxyacetophenone Camellia Sinensis Leaf Water
Caution for sensitive skin
Laminaria Japonica Extract Anthemis Nobilis Flower Extract Calendula Officinalis Flower Extract Butylene Glycol Camellia Sinensis Leaf Water Tromethamine

Ingredients list

65 total
Lower hazard (1) Higher hazard (6)
All65 Skin Conditioning57 Emollient10 Viscosity Controlling9 Fragrance8 Humectant7 Emulsifying6 Viscosity Increasing Agent5 Emulsion Stabilising5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
A
Calendula Officinalis Flower Extract
(Masking, Perfuming, Skin Conditioning)
A
Hydrogenated Poly(C6-14 Olefin)
(Emollient, Skin Conditioning, Viscosity Controlling)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
Polymethylsilsesquioxane
(Opacifying)
1
A
1,2-Hexanediol
(Solvent)
Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling)
2
A
Cyclohexasiloxane
(Hair Conditioning, Skin Conditioning, Emollient, Solvent)
1
B
Polyglyceryl-10 Stearate
(Skin Conditioning, Emulsifying, Surfactant)
1
Polyglyceryl-3 Methylglucose Distearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Water
(Solvent)
1
A
C12-15 Alkyl Benzoate
(Skin Conditioning, Emollient, Antimicrobial)
1
Neopentyl Glycol Diheptanoate
(Skin Conditioning, Emollient, Viscosity Increasing Agent)
1
Pentaerythrityl Distearate
(Skin Conditioning, Emollient, Viscosity Increasing Agent, Emulsifying)
1
Eclipta Prostrata Leaf Extract
(Skin Conditioning)
1
Laminaria Japonica Extract
(Fragrance, Skin Protecting)
1
Hydroxyacetophenone
(Antioxidant)
1
Madecassoside
(Antioxidant, Skin Conditioning)
1
B
Centella Asiatica Extract
(Cleansing, Skin Conditioning, Smoothing, Soothing, Tonic)
Ficus Carica Fruit Extract
(Humectant)
1
B
Camellia Sinensis Leaf Water
(Masking, Perfuming, Tonic)
Good for Oily Skin
Good for Oily Skin
1
Houttuynia Cordata Extract
(Skin Conditioning)
Codonopsis Lanceolata Root Extract
(Skin Conditioning)
Dictamnus Dasycarpus Root Extract
(Skin Conditioning)
Fragaria Indica Extract
(Skin Conditioning)
Kochia Scoparia Fruit Extract
(Skin Conditioning)
1
Lithospermum Erythrorhizon Root Extract
(Skin Conditioning)
1
Phellinus Linteus Extract
(Skin Conditioning)
Polygonum Fagopyrum Seed Extract
(Skin Conditioning)
1
Prunus Mume Fruit Extract
(Humectant)
5
6
Rosin
(Binding Agent, Epilating Agent, Film Forming, Viscosity Increasing Agent)
1
Sophora Flavescens Root Extract
(Antioxidant, Skin Conditioning)
Bisabolol
(Fragrance, Skin Conditioning, Soothing)
2
A
Hydrogenated Lecithin
(Skin Conditioning, Emulsifying, Surfactant, Suspending Agent Nonsurfactant)
1
Adenosine
(Skin Conditioning)
1
Fructooligosaccharides
(Humectant, Skin Conditioning)
1
A
Argania Spinosa Kernel Oil
(Emollient, Skin Conditioning)
Fungal Acne
Fungal Acne Trigger
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
Glyceryl Polymethacrylate
(Film Forming, Viscosity Controlling)
1
A
Beta-Glucan
(Bulking Agent, Skin Conditioning)
Melaleuca Alternifolia Leaf Oil
(Antioxidant, Perfuming)
1
Althaea Officinalis Leaf/Root Extract
(Emollient)
1
Anthemis Nobilis Flower Extract
(Masking, Perfuming, Skin Conditioning)
Good for Sensitive Skin
Good for Sensitive Skin
Good for Dry Skin
Good for Dry Skin
Foeniculum Vulgare Leaf Extract
(Humectant)
Lavandula Angustifolia Flower/Leaf/Stem Extract
(Flavouring, Fragrance, Oral Care, Perfuming, Skin Conditioning)
Ocimum Basilicum Flower/Leaf Extract
(Tonic)
Pyrus Malus Fruit Water
(Fragrance)
rosmarinus officinalis extract
(Antimicrobial, Refreshing, Tonic)
1
Dicaprylyl Carbonate
(Skin Conditioning, Emollient)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
Potentilla Anemonifolia Extract
(Humectant, Skin Conditioning)
1
Sucrose Distearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
1
Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning)
1
Vaccinium Myrtillus Fruit Extract
(Skin Conditioning)
Saccharum Officinarum Extract
(Moisturising, Skin Conditioning)
1
B
Sodium Stearoyl Glutamate
(Hair Conditioning, Skin Conditioning, Surfactant Cleansingagent, Emulsifying)
Citrus Aurantium Dulcis Fruit Extract
(Fragrance, Skin Conditioning)
Citrus Limon Fruit Extract
(Fragrance, Skin Conditioning)
Acer saccharum extract
(Skin Conditioning)
1
Palmitoyl Pentapeptide-4
(Skin Conditioning)
1
Acrylates/C10-30 Alkyl Acrylate Crosspolymer
(Emulsion Stabilising, Film Forming, Viscosity Controlling)
2
A
Tromethamine
(Fragrance, Ph Adjuster, Buffering Agent, Masking)
1
Ammonium Acryloyldimethyltaurate/VP Copolymer
(Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)

My Ingredient Notes

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Key ingredients

Antioxidants
Shields skin from free radical damage.
Niacinamide
Strengthens, smooths, and brightens skin.
Ceramides
Locks in moisture and supports skin barrier.
Hyaluronic Acid
Hydrates by attracting and holding water.
Peptides
Supports skin hydration and improves firmness.

Benefits

Reduces IrritationEases discomfort and supports skin resilience.
HydratingBoosts hydration and relieves dry, tight skin.
Redness ReducingSoothes visible redness and calms irritation.
Barrier RepairStrengthen and restore your skin's natural barrier.
Anti-AgingSoftens lines and helps skin look youthful.
Scar HealingImproves the look of marks and scars.
Skin TextureSmooths rough patches and refines texture.
Good For Oily SkinBalances oil and helps reduce shine.

Concerns

Not fungal acne (malassezia) safe

Ingredients explained

Calendula Officinalis Flower Extract
Masking, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A MaskingPerfumingSkin conditioning
Hydrogenated Poly(C6-14 Olefin)
Emollient, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A CIR A EmollientSkin conditioningViscosity controlling
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Polymethylsilsesquioxane
Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 Opacifying
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Butyrospermum Parkii Butter
Skin conditioning, Viscosity controlling
Limited public safety data.Read moreShow less
EWG N/A Skin conditioningViscosity controlling
Cyclohexasiloxane
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Hair conditioningSkin conditioningEmollientSolvent
Polyglyceryl-10 Stearate
Skin conditioning, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmulsifyingSurfactant
Polyglyceryl-3 Methylglucose Distearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientEmulsifyingSurfactant
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
C12-15 Alkyl Benzoate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningEmollientAntimicrobial
Neopentyl Glycol Diheptanoate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientViscosity increasing agent
Pentaerythrityl Distearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientViscosity increasing agentEmulsifying
Eclipta Prostrata Leaf Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Laminaria Japonica Extract
Fragrance, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 FragranceSkin protecting
+ 45 more — see the full ingredients list above
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Camellia Sinensis Leaf Water
Masking, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B MaskingPerfumingTonic Good for Oily Skin
Rosin
Binding agent, Epilating agent
Moderate-hazard ingredient.Read moreShow less
EWG 5–6 Binding agentEpilating agentFilm formingViscosity increasing agent
Argania Spinosa Kernel Oil
Emollient, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientSkin conditioning Fungal-acne trigger
Anthemis Nobilis Flower Extract
Masking, Perfuming
Low-hazard ingredient.Read moreShow less
EWG 1 MaskingPerfumingSkin conditioning Good for Sensitive SkinGood for Dry Skin

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.

Trust & honesty

Effective levels — general guide

The concentrations these actives are typically effective at in research — not a measurement of this product.

Niacinamide 2–5% (up to 10%)

Most research uses 2–5%; some formulas go to 10%. Very high levels can cause flushing in sensitive skin.

Niacinamide

INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.

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