KOCOSTAR Lemon Sliced Mask

KOCOSTAR

Where to buy Possibly in stock

About this product

The KOCOSTAR Lemon Sliced Mask is a wash-off mask. Our analysis of its 24 ingredients (20 low-risk) rates it Excellent (94/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.

Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Wash-Off Mask
Ingredients
24
Low-risk
20
Fragrance
Contains fragrance
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 6/3
Good for dry skin
Caprylyl Glycol Butylene Glycol Sodium Hyaluronate Glycerin Hydrolyzed Elastin Hydrolyzed Collagen
Caution for dry skin
Xanthan Gum Glycerin PEG-60 Hydrogenated Castor Oil
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Magnesium Ascorbyl Phosphate
Sensitive Skin 4/5
Good for sensitive skin
Magnesium Ascorbyl Phosphate Glycerin Allantoin Citrus Limon (Lemon) Fruit Extract
Caution for sensitive skin
Butylene Glycol Glycerin PEG-60 Hydrogenated Castor Oil Phenoxyethanol Fragrance

Ingredients list

24 total
Lower hazard (1) Higher hazard (8)
All24 Skin Conditioning19 Humectant7 Solvent5 Hair Conditioning5 Fragrance4 Viscosity Controlling4 Emulsion Stabilising4 Skin Protecting3
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
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
3
PEG/PPG-17/6 Copolymer
(Solvent)
1
A
1,2-Hexanediol
(Solvent)
2
B
Citrus Limon (Lemon) Fruit Extract Good for Oily Skin
Good for Oily Skin
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry Skin
1
A
Hydrolyzed Collagen
(Hair Conditioning, Nail Conditioning Agent, Skin Conditioning, Antistatic Agent, Emollient, Film Forming, Humectant)
1
Hydrolyzed Elastin
(Antistatic Agent, Film Forming, Hair Conditioning, Humectant, Skin Conditioning)
1
Hydrolyzed Conchiolin Protein
(Hair Conditioning, Skin Conditioning)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
3
B
PEG-60 Hydrogenated Castor Oil
(Fragrance, Sufactant, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
Salicornia Herbacea Extract
(Skin Conditioning)
1
Phragmites Communis Extract
(Skin Conditioning)
Buddleja Davidii Extract
(Skin Conditioning)
Thymus Vulgaris (Thyme) Flower/Leaf Extract
1
A
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant)
1
Illicium Verum (Anise) Fruit Extract
(Skin Conditioning)
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
A
Magnesium Ascorbyl Phosphate
(Antioxidant)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
8
Fragrance
(Deodorant, Masking, Perfuming)

My Ingredient Notes

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Key ingredients

Butylene Glycol
Skin Conditioning, Humectant
Glycerin
Humectant, Skin Protecting
Sodium Hyaluronate
Skin Conditioning, Humectant
Hydrolyzed Collagen
Skin Conditioning, Emollient
Hydrolyzed Elastin
Humectant, Skin Conditioning
Hydrolyzed Conchiolin Protein
Skin Conditioning

Benefits

Good for dry skin
Good for oily/acne-prone skin

Concerns

Contains paraben
Not fungal acne (malassezia) safe
Fragrance — higher EWG
May not suit sensitive skin

EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
PEG/PPG-17/6 Copolymer
Solvent
Low-to-moderate hazard.Read moreShow less
EWG 3 Solvent
1,2-Hexanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Solvent
Hydrolyzed Collagen
Hair conditioning, Nail conditioning agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningNail conditioning agentSkin conditioningAntistatic agentEmollientFilm formingHumectant
Hydrolyzed Elastin
Antistatic agent, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 Antistatic agentFilm formingHair conditioningHumectantSkin conditioning
Hydrolyzed Conchiolin Protein
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning
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
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Salicornia Herbacea Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Phragmites Communis Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Buddleja Davidii Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Thymus Vulgaris (Thyme) Flower/Leaf Extract
Other
Limited public safety data.Read moreShow less
EWG N/A
Caprylyl Glycol
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningEmollientHumectant
Illicium Verum (Anise) Fruit Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Magnesium Ascorbyl Phosphate
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Antioxidant
+ 1 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
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
Citrus Limon (Lemon) Fruit Extract
Other
Excessively acidic, potentially irritatingRead moreShow less
EWG 2 CIR B Good for Oily SkinBad for Sensitive Skin
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant 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
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
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Fragrance
Deodorant, Masking
Higher-hazard ingredient.Read moreShow less
EWG 8 DeodorantMaskingPerfuming

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

Effective levels — general guide

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

Vitamin C (ascorbic) 5–20%

L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.

Magnesium Ascorbyl Phosphate

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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