Seaweed Detox Wash Off Mask

Coeternal

Where to buy Possibly in stock

About this product

The Coeternal Seaweed Detox Wash Off Mask is a wash-off mask. Our analysis of its 43 ingredients (31 low-risk) rates it Excellent (99/100). Based on its ingredients, it looks well-suited to oily / acne-prone skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Wash-Off Mask
Ingredients
43
Low-risk
31
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 8/10
Good for dry skin
Fucus Vesiculosus Extract Cetearyl Alcohol Caprylic/Capric Triglyceride Caprylyl Glycol Butylene Glycol Palmitic Acid Polyglyceryl-3 Methylglucose Distearate Coix Lacryma-Jobi Ma-yuen Seed Powder
Caution for dry skin
Glyceryl Stearate SE Dextrin Sorbitan Sesquioleate Stearic Acid Kaolin Salicylic Acid Palmitic Acid Polyglyceryl-3 Methylglucose Distearate Volcanic Ash Bentonite
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Salicylic Acid
Sensitive Skin 8/13
Good for sensitive skin
Ulva Lactuca Extract Laminaria Japonica Extract Fucus Vesiculosus Extract Gelidium Cartilagineum Extract Undaria Pinnatifida Extract Kaolin Laminaria Cloustoni Extract Hippophae Rhamnoides Fruit Oil
Caution for sensitive skin
Laminaria Japonica Extract Methyl Diisopropyl Propionamide Menthyl Lactate Cellulose Gum Stearic Acid Arginine Ethyl Menthane Carboxamide Caprylic/Capric Triglyceride Butylene Glycol Salicylic Acid Palmitic Acid Chamaecyparis Obtusa Water Citric Acid

Ingredients list

43 total
Lower hazard (1) Higher hazard (4)
All43 Skin Conditioning23 Fragrance14 Masking10 Skin Protecting8 Viscosity Controlling7 Emulsion Stabilising7 Emollient6 Emulsifying5
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Kaolin
(Abrasive, Absorbent, Anticaking Agent, Bulking Agent, Opacifying, Skin Protecting, Slip Modifier)
2
A
Bentonite
(Absorbent, Bulking Agent, Emulsion Stabilising, Opacifying, Suspending Agent Nonsurfactant, Viscosity Increasing Agent, Viscosity Controlling)
Olea Europaea Fruit Oil
(Fragrance, Perfuming, Skin Conditioning)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
A
Glyceryl Stearate SE
(Emulsifying, Surfactant)
Bad for Oily Skin
Bad for Oily Skin
1
Polyglyceryl-3 Methylglucose Distearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
A
1,2-Hexanediol
(Solvent)
1
A
Sorbitan Sesquioleate
(Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
A
Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling)
Artemisia Caruifolia Powder
(Abrasive, Fragrance, Humectant, Skin Conditioning, Skin Protecting)
1
A
Palmitic Acid
(Fragrance, Opacifying, Sufactant, Surfactant Emulsifying Agentsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Palmitic Acid., Emollient)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
Coix Lacryma-Jobi Ma-yuen Seed Powder
(Humectant, Skin Conditioning)
1
A
Stearic Acid
(Fragrance, Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Stearic Acid., Emulsion Stabilising, Masking, Refatting)
Bad for Oily Skin
Bad for Oily Skin
Fungal Acne
Fungal Acne Trigger
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
A
Hippophae Rhamnoides Fruit Oil
(Skin Protecting)
1
A
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent)
1
A
Dextrin
(Absorbent, Binding Agent, Bulking Agent, Viscosity Increasing Agent, Binding, Viscosity Controlling)
4
B
Salicylic Acid
(Antiacne Agent, Antidandruff Agent, Corn/Callus/Wart Remover, Denaturant, Exfoliant, Fragrance, Hair Conditioning, Skin Conditioning, Keratolytic, Masking, Preservative)
Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Cellulose Gum
(Binding Agent, Emulsion Stabilising, Film Forming, Fragrance, Viscosity Increasing Agent, Binding, Masking, Viscosity Controlling)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
Menthyl Lactate
(Flavoring Agent, Fragrance, Masking, Refreshing)
1
Ethyl Menthane Carboxamide
(Flavoring Agent, Fragrance, Tonic)
1
Gardenia Florida Fruit Extract
(Skin Conditioning)
1
Methyl Diisopropyl Propionamide
(Fragrance, Masking)
Hizikia Fusiforme Extract
(Skin Conditioning)
Ecklonia Cava Extract
(Skin Conditioning)
Codium Fragile Extract
(Skin Conditioning)
1
Laminaria Japonica Extract
(Fragrance, Skin Protecting)
1
Macrocystis Pyrifera Extract
(Viscosity Controlling)
1
Chlorella Vulgaris Extract
(Skin Conditioning)
1
Fucus Vesiculosus Extract
(Emollient, Skin Conditioning, Smoothing, Soothing)
1
Gelidium Cartilagineum Extract
(Skin Protecting)
1
Ulva Lactuca Extract
(Skin Conditioning, Skin Protecting)
Caulerpa Lentillifera Extract
(Film Forming)
Laminaria Cloustoni Extract
(Skin Protecting)
1
A
Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
Volcanic Ash
(Abrasive, Absorbent, Bulking Agent)
1
Chamaecyparis Obtusa Water
(Fragrance, Masking)
Sargassum Fulvellum Extract
(Skin Conditioning)
1
Undaria Pinnatifida Extract
(Skin Conditioning, Skin Protecting)
Daucus Carota Sativa Leaf Extract
(Skin Conditioning Miscellaneous)

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

Exfoliators
Removes dead skin cells to smoothe texture.
AHA
Exfoliates skin for a brighter complexion.
BHA
Unclogs pores and reduces excess oil.

Benefits

HydratingBoosts hydration and relieves dry, tight skin.
Reduces IrritationEases discomfort and supports skin resilience.
Good For Oily SkinBalances oil and helps reduce shine.
Reduces Large PoresMinimizes the look of enlarged pores.
Acne FightingFights acne and helps prevent breakouts.
BrighteningRestores radiance to dull, tired skin.
Barrier RepairStrengthen and restore your skin's natural barrier.
Redness ReducingSoothes visible redness and calms irritation.

Concerns

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

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Kaolin
Abrasive, Absorbent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbrasiveAbsorbentAnticaking agentBulking agentOpacifyingSkin protectingSlip modifier
Bentonite
Absorbent, Bulking agent
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A AbsorbentBulking agentEmulsion stabilisingOpacifyingSuspending agent -nonsurfactantViscosity increasing agentViscosity controlling
Olea Europaea Fruit Oil
Fragrance, Perfuming
Limited public safety data.Read moreShow less
EWG N/A FragrancePerfumingSkin conditioning
Polyglyceryl-3 Methylglucose Distearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioningEmollientEmulsifyingSurfactant
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Cetearyl Alcohol
Emulsion stabilising, Opacifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingOpacifyingFoam boostingViscosity increasingagent - aqueousViscosity increasing agentEmollientEmulsifyingViscosity controlling
Artemisia Caruifolia Powder
Abrasive, Fragrance
Limited public safety data.Read moreShow less
EWG N/A AbrasiveFragranceHumectantSkin conditioningSkin protecting
Coix Lacryma-Jobi Ma-yuen Seed Powder
Humectant, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A HumectantSkin conditioning
Caprylyl Glycol
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningEmollientHumectant
Hippophae Rhamnoides Fruit Oil
Skin protecting
Limited public safety data.Read moreShow less
EWG N/A CIR A Skin protecting
Caprylic/Capric Triglyceride
Emollient, Masking
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientMaskingPerfumingSkin conditioningSolvent
Dextrin
Absorbent, Binding agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A AbsorbentBinding agentBulking agentViscosity increasing agentBindingViscosity controlling
Cellulose Gum
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingFilm formingFragranceViscosity increasing agentBindingMaskingViscosity controlling
Disodium EDTA
Chelating agent, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentViscosity controlling
+ 21 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
Glyceryl Stearate SE
Emulsifying, Surfactant
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A EmulsifyingSurfactant Bad for Oily Skin
Sorbitan Sesquioleate
Emulsifying, Surfactant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmulsifyingSurfactant Fungal-acne trigger
Palmitic Acid
Fragrance, Opacifying
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceOpacifyingSufactantSurfactant -emulsifying agentsurfactant-cleansing agent is included as a function for the soap form of palmitic acid.Emollient Bad for Oily SkinFungal-acne trigger
Stearic Acid
Fragrance, Sufactant
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceSufactantEmulsifyingSurfactantsurfactant-cleansing agent is included as a function for the soap form of stearic acid.Emulsion stabilisingMaskingRefatting Bad for Oily SkinFungal-acne trigger
Citric Acid
Chelating agent, Fragrance
Skin irritation can occur at high concentrationRead moreShow less
EWG 2 CIR A Chelating agentFragrancePh adjusterBuffering agentMasking Bad for Sensitive Skin
Salicylic Acid
Antiacne agent, Antidandruff agent
Skin irritation can occur at high concentrationRead moreShow less
EWG 4 CIR B Antiacne agentAntidandruff agentCorn/callus/wart removerDenaturantExfoliantFragranceHair conditioningSkin conditioningKeratolyticMaskingPreservative Good for Oily SkinBad for Sensitive Skin

How to use

How to use

  • 1 Where it fits: Use as the first step, on clean hands, before the rest of your routine.
  • 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

Pregnancy & breastfeeding

Contains ingredients some choose to avoid or double-check while pregnant or nursing.

Use with caution
BHA (salicylic) (Salicylic Acid)

Low-strength topical salicylic acid (BHA) is generally considered fine. Caution is usually reserved for high-strength leave-on products and salicylic peels.

This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.

Effective levels — general guide

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

BHA (salicylic) 0.5–2%

Salicylic acid is OTC-capped at 2%; 0.5–2% is the usual leave-on range. Much below that it acts more as a soothing agent than an exfoliant.

Salicylic Acid

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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