Hada Labo Gokujyun Alpha Mask

Hada Labo

Where to buy Possibly in stock

About this product

The Hada Labo Gokujyun Alpha Mask is a wash-off mask. Our analysis of its 26 ingredients (21 low-risk) rates it Excellent (91/100). 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
Wash-Off Mask
Ingredients
26
Low-risk
21
Fragrance
Fragrance-free
Origin
Japan

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 11/4
Good for dry skin
Diglycerin Sodium Acetylated Hyaluronate Sodium Hyaluronate Crosspolymer Squalane Zea Mays (Corn) Oil Butylene Glycol Glycerin Polyglyceryl-10 Isostearate Hydrolyzed Collagen Hydrolyzed Hyaluronic Acid Hydrolyzed Soy Protein
Caution for dry skin
Zea Mays (Corn) Oil Glycerin Polyglyceryl-10 Isostearate Triethanolamine
Oily/Acne-Prone Skin 0/1
Caution for oily/acne-prone skin
Zea Mays (Corn) Oil
Sensitive Skin 4/7
Good for sensitive skin
Glycerin Thioctic Acid Tocopheryl Acetate BHT
Caution for sensitive skin
Zea Mays (Corn) Oil Butylene Glycol Glycerin Retinyl Palmitate (Vitamin A) Methylparaben Triethanolamine BHT

Ingredients list

26 total
Lower hazard (1) Higher hazard (9)
All26 Skin Conditioning19 Humectant10 Hair Conditioning7 Solvent6 Fragrance6 Masking4 Emollient4 Antistatic Agent3
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
2
Beta-Carotene
(Skin Conditioning)
Good for Dry Skin
Good for Dry Skin
6
A
BHT
(Antioxidant, Fragrance, Masking)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
Diglycerin
(Humectant, Skin Conditioning, Solvent)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
A
Helianthus Annuus (Sunflower) Seed Oil Fungal Acne
Fungal Acne Trigger
1
A
Hydrolyzed Collagen
(Hair Conditioning, Nail Conditioning Agent, Skin Conditioning, Antistatic Agent, Emollient, Film Forming, Humectant)
1
Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning)
A
Hydrolyzed Soy Protein
(Antistatic Agent, Hair Conditioning, Humectant, Skin Conditioning)
4
A
Methylparaben
(Fragrance, Preservative)
Paraben
Paraben
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
1
B
Polyglyceryl-10 Isostearate
(Skin Conditioning, Emollient, Emulsifying, Surfactant)
1
A
PPG-10 Methyl Glucose Ether
(Hair Conditioning, Skin Conditioning)
1
A
Pullulan
(Binding Agent, Film Forming, Binding)
9
Retinyl Palmitate (Vitamin A) Good for Dry Skin
Good for Dry Skin
Fungal Acne
Fungal Acne Trigger
1
Sodium Acetylated Hyaluronate
(Humectant)
1
Sodium Hyaluronate Crosspolymer
(Humectant, Skin Conditioning)
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
2
Thioctic Acid
(Antioxidant)
1
Tocopherol (Vitamin E) Good for Dry Skin
Good for Dry Skin
3
Tocopheryl Acetate
(Antioxidant, Skin Conditioning)
Bad for Oily Skin
Bad for Oily Skin
5
B
Triethanolamine
(Fragrance, Ph Adjuster, Emulsifying, Surfactant, Buffering Agent, Masking)
1
A
Zea Mays (Corn) Oil
(Fragrance, Hair Conditioning, Skin Conditioning Agent Occlusive, Emulsifying, Surfactant, Antistatic Agent, Emollient, Masking, Skin Conditioning, Solvent)
Bad for Oily Skin
Bad for Oily Skin

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

Butylene Glycol
Skin Conditioning, Humectant
Glycerin
Humectant, Skin Protecting
Beta-Carotene
Skin Conditioning
BHT
Antioxidant
Diglycerin
Humectant, Skin Conditioning
Hydrolyzed Collagen
Skin Conditioning, Emollient

Benefits

Good for dry skin

Concerns

Contains paraben
Not fungal acne (malassezia) safe
Retinyl Palmitate (Vitamin A) — higher EWG
May not suit oily/acne-prone skin
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
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Diglycerin
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioningSolvent
Disodium EDTA
Chelating agent, Viscosity controlling
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Chelating agentViscosity controlling
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 Hyaluronic Acid
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningHumectantSkin conditioning
Hydrolyzed Soy Protein
Antistatic agent, Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A CIR A Antistatic agentHair conditioningHumectantSkin conditioning
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
Polyglyceryl-10 Isostearate
Skin conditioning, Emollient
Low-hazard ingredient.Read moreShow less
EWG 1 CIR B Skin conditioningEmollientEmulsifyingSurfactant
PPG-10 Methyl Glucose Ether
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioning
Pullulan
Binding agent, Film forming
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentFilm formingBinding
Sodium Acetylated Hyaluronate
Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Humectant
Sodium Hyaluronate Crosspolymer
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioning
Squalane
Emollient, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientHair conditioningRefattingSkin conditioning
Thioctic Acid
Antioxidant
Low-hazard ingredient.Read moreShow less
EWG 2 Antioxidant
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
Beta-Carotene
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 2 Skin conditioning Good for Dry Skin
BHT
Antioxidant, Fragrance
Moderate-hazard ingredient.Read moreShow less
EWG 6 CIR A AntioxidantFragranceMasking
Helianthus Annuus (Sunflower) Seed Oil
Other
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Fungal-acne trigger
Methylparaben
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Retinyl Palmitate (Vitamin A)
Other
Higher-hazard ingredient.Read moreShow less
EWG 9 Good for Dry SkinFungal-acne trigger
Tocopherol (Vitamin E)
Other
Low-hazard ingredient.Read moreShow less
EWG 1 Good for Dry Skin
Tocopheryl Acetate
Antioxidant, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 3 AntioxidantSkin conditioning Bad for Oily Skin
Triethanolamine
Fragrance, Ph adjuster
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR B FragrancePh adjusterEmulsifyingSurfactantBuffering agentMasking
Zea Mays (Corn) Oil
Fragrance, Hair conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceHair conditioningSkin-conditioning agent - occlusiveEmulsifyingSurfactantAntistatic agentEmollientMaskingSkin conditioningSolvent Bad for Oily 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.

Often avoided
Retinoids (Vitamin A) (Retinyl Palmitate (Vitamin A))

Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.

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.

Retinoids (Vitamin A) 0.01–1%

Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.

Retinyl Palmitate (Vitamin A)

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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