A.m. Sunday Happy Hydrogel Mask

KOCOSTAR

A.m. Sunday Happy Hydrogel Mask

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About this product

The KOCOSTAR A.m. Sunday Happy Hydrogel Mask is a sheet mask. Our analysis of its 42 ingredients (30 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to dry skin.

Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Sheet Mask
Ingredients
42
Low-risk
30
Fragrance
Fragrance-free
Origin
South Korea

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 10/3
Good for dry skin
Glucose Dipotassium Glycyrrhizate Cetyl Ethylhexanoate Caprylic/Capric Triglyceride Ceratonia Siliqua Gum Butylene Glycol Sodium Hyaluronate Glycerin Saccharomyces Ferment Filtrate Galactomyces Ferment Filtrate
Caution for dry skin
Xanthan Gum Glycerin PEG-60 Hydrogenated Castor Oil
Oily/Acne-Prone Skin No data
Sensitive Skin 7/9
Good for sensitive skin
Codium Tomentosum Extract Laminaria Japonica Extract Enteromorpha Compressa Extract Undaria Pinnatifida Extract Glycerin Tocopheryl Acetate Allantoin
Caution for sensitive skin
Laminaria Japonica Extract Agar Caprylic/Capric Triglyceride Ceratonia Siliqua Gum Butylene Glycol Glycerin PEG-60 Hydrogenated Castor Oil Phenoxyethanol Artemisia Vulgaris Oil

Ingredients list

42 total
Lower hazard (1) Higher hazard (4)
All42 Skin Conditioning32 Humectant10 Fragrance10 Viscosity Controlling8 Skin Protecting7 Solvent6 Hair Conditioning4 Binding4
EWG CIR Ingredient Name & Cosmetic Functions Notes
Collagen Water
(Humectant, Skin Conditioning, Solvent, Viscosity Controlling)
2
A
Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent)
Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
B
Cetyl Ethylhexanoate
(Skin Conditioning, Emollient)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
A
1,2-Hexanediol
(Solvent)
Chondrus Crispus Powder
(Abrasive)
1
Ceratonia Siliqua Gum
(Binding, Emollient, Emulsion Stabilising, Film Forming, Masking, Viscosity Controlling)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
1
Water
(Solvent)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
3
B
PEG-60 Hydrogenated Castor Oil
(Fragrance, Sufactant, Surfactant)
Fungal Acne
Fungal Acne Trigger
2
A
Chlorphenesin
(Cosmetic Biocide, Antimicrobial, Preservative)
CYAMOPSIS TETRAGONOLOBA GUM
(Binding, Emulsion Stabilising, Film Forming, Fragrance, Viscosity Controlling)
1
A
Agar
(Binding Agent, Fragrance, Viscosity Increasing Agent, Binding, Masking, Viscosity Controlling)
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
1
A
Allantoin
(Skin Conditioning, Skin Protecting, Soothing)
Good for Oily Skin
Good for Oily Skin
Good for Sensitive Skin
Good for Sensitive Skin
1
Potassium Chloride
(Viscosity Increasing Agent, Viscosity Controlling)
Bad for Oily Skin
Bad for Oily Skin
1
A
Glucose
(Flavoring Agent, Humectant, Skin Conditioning Agent Miscellaneous)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Adenosine
(Skin Conditioning)
Collagen Extract
(Hair Conditioning, Skin Conditioning)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
Artemisia Vulgaris Oil
(Perfuming, Skin Conditioning)
Copaifera Officinalis Resin
(Film Forming, Fragrance)
MENTHA VIRIDIS LEAF OIL
(Astringent, Fragrance, Skin Conditioning)
1
A
Dipotassium Glycyrrhizate
(Flavoring Agent, Skin Conditioning, Humectant)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
Undaria Pinnatifida Extract
(Skin Conditioning, Skin Protecting)
1
Codium Tomentosum Extract
(Skin Protecting)
1
Enteromorpha Compressa Extract
(Skin Protecting)
1
Laminaria Japonica Extract
(Fragrance, Skin Protecting)
1
Salicornia Herbacea Extract
(Skin Conditioning)
Aspergillus Ferment
(Skin Conditioning)
1
Saccharomyces Ferment Filtrate
(Humectant)
Galactomyces Ferment Filtrate
(Humectant)
Fungal Acne
Fungal Acne Trigger
1
Leuconostoc/Radish Root Ferment Filtrate
(Antidandruff Agent, Antimicrobial)
1
Lactobacillus Ferment Lysate
(Skin Conditioning)
Lactococcus Ferment Lysate
(Skin Conditioning)
1
A
Beta-Glucan
(Bulking Agent, Skin Conditioning)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)

My Ingredient Notes

No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.

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Key ingredients

Vitamin E
Protects skin and soothes irritation.
Antioxidants
Shields skin from free radical damage.
Niacinamide
Strengthens, smooths, and brightens skin.
Hyaluronic Acid
Hydrates by attracting and holding water.
Exfoliators
Removes dead skin cells to smoothe texture.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Redness ReducingSoothes visible redness and calms irritation.
Reduces IrritationEases discomfort and supports skin resilience.
Anti-AgingSoftens lines and helps skin look youthful.
Scar HealingImproves the look of marks and scars.
BrighteningRestores radiance to dull, tired skin.
Dark SpotsFades dark spots for even skin tone.

Concerns

Contains paraben
Not fungal acne (malassezia) safe
May not suit sensitive skin

Ingredients explained

Collagen Water
Humectant, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A HumectantSkin conditioningSolventViscosity controlling
Cetyl Ethylhexanoate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollient
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Chondrus Crispus Powder
Abrasive
Limited public safety data.Read moreShow less
EWG N/A Abrasive
Ceratonia Siliqua Gum
Binding, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 BindingEmollientEmulsion stabilisingFilm formingMaskingViscosity controlling
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Xanthan Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingSkin conditioningSurfactant -emulsifying agentViscosity increasing agentBindingGel formingViscosity controlling
Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Chlorphenesin
Cosmetic biocide, Antimicrobial
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Cosmetic biocideAntimicrobialPreservative
CYAMOPSIS TETRAGONOLOBA GUM
Binding, Emulsion stabilising
Limited public safety data.Read moreShow less
EWG N/A BindingEmulsion stabilisingFilm formingFragranceViscosity controlling
Agar
Binding agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentFragranceViscosity increasing agentBindingMaskingViscosity controlling
Glucose
Flavoring agent, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Flavoring agentHumectantSkin-conditioning agent- miscellaneous
Adenosine
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Collagen Extract
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioning
+ 17 more — see the full ingredients list above
Glycerin
Denaturant, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A DenaturantFragranceHair conditioningHumectantOral care agentOral health care drugSkin protectingViscosity decreasing agentPerfumingSolvent Good for Dry SkinFungal-acne trigger
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Panthenol
Antistatic agent, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antistatic agentHair conditioningSkin conditioning Good for Dry Skin
PEG-60 Hydrogenated Castor Oil
Fragrance, Sufactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceSufactantSurfactant Fungal-acne trigger
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Allantoin
Skin conditioning, Skin protecting
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSkin protectingSoothing Good for Oily SkinGood for Sensitive Skin
Potassium Chloride
Viscosity increasing agent, Viscosity controlling
Potentially comedogenic - can block poresRead moreShow less
EWG 1 Viscosity increasing agentViscosity controlling Bad for Oily Skin
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin
Galactomyces Ferment Filtrate
Humectant
Limited public safety data.Read moreShow less
EWG N/A Humectant Fungal-acne trigger

How to use

How to use

  • 1 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

Officially notified as a cosmetic in Malaysia (NPRA). Government registration record.

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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