Koi Gokujyun Whitening Perfect Gel

Hada Labo

Koi Gokujyun Whitening Perfect Gel

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About this product

The Hada Labo Koi Gokujyun Whitening Perfect Gel is a moisturizer. Our analysis of its 32 ingredients (19 low-risk) rates it Excellent (90/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Moisturizers
Ingredients
32
Low-risk
19
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 12/8
Good for dry skin
Glyceryl Stearate Diglycerin Behenyl Alcohol Cetyl Alcohol Sorbitol Squalane Butylene Glycol Sodium Hyaluronate Glycerin Polyquaternium-51 Hydrolyzed Hyaluronic Acid Petrolatum
Caution for dry skin
Cetyl Alcohol Xanthan Gum Glycerin PPG-24-Glycereth-24 Triethanolamine PEG-20 Sorbitan Isostearate Tranexamic Acid PPG-17-Buteth-17
Oily/Acne-Prone Skin 1/1
Good for oily/acne-prone skin
Tranexamic Acid
Caution for oily/acne-prone skin
Petrolatum
Sensitive Skin 3/9
Good for sensitive skin
Glycerin Sodium Metabisulfite Petrolatum
Caution for sensitive skin
Dipropylene Glycol Cetyl Alcohol Sorbitol Butylene Glycol Glycerin Methylparaben Phenoxyethanol Triethanolamine PPG-17-Buteth-17

Ingredients list

32 total
Lower hazard (1) Higher hazard (6)
All32 Skin Conditioning19 Fragrance10 Humectant10 Emulsion Stabilising8 Viscosity Controlling8 Solvent8 Hair Conditioning6 Viscosity Increasing Agent6
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
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
Tranexamic Acid
(Cosmetic Astringent, Skin Conditioning)
1
Diglycerin
(Humectant, Skin Conditioning, Solvent)
1
A
Dipropylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Masking, Viscosity Controlling)
1
Sorbitol
(Flavoring Agent, Fragrance, Humectant, Plasticizer, Skin Conditioning)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
PPG-17-Buteth-17
(Fragrance, Hair Conditioning, Skin Conditioning, Emulsifying, Surfactant)
4
Petrolatum
(Hair Conditioning, Skin Conditioning Agent Occlusive, Skin Protecting, Emollient, Moisturising, Uv Absorber)
Bad for Oily Skin
Bad for Oily Skin
Polyglyceryl-10 Eicosanedioate/Tetradecanedioate
(Hair Conditioning, 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
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
Diethoxyethyl Succinate
(Solvent)
1
PPG-24-Glycereth-24
(Solvent, Emulsifying, Surfactant)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
5
B
PEG-20 Sorbitan Isostearate
(Sufactant, Emulsifying, Surfactant)
1
A
Squalane
(Emollient, Hair Conditioning, Refatting, Skin Conditioning)
4
A
Methylparaben
(Fragrance, Preservative)
Paraben
Paraben
1
A
Glyceryl Stearate
(Emollient, Emulsifying)
Fungal Acne
Fungal Acne Trigger
1
A
Cetyl Alcohol
(Emulsion Stabilising, Fragrance, Opacifying, Emulsifying, Surfactant, Foam Boosting, Viscosity Increasing Agent, Emollient, Masking, Viscosity Controlling)
1
A
Behenyl Alcohol
(Binding Agent, Emulsion Stabilising, Viscosity Increasing Agent, Binding, Emollient, Viscosity Controlling)
1
Polyquaternium-51
(Film Forming, Humectant, Skin Conditioning)
1
A
Disodium EDTA
(Chelating Agent, Viscosity Controlling)
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
5
B
Triethanolamine
(Fragrance, Ph Adjuster, Emulsifying, Surfactant, Buffering Agent, Masking)
4
A
Sodium Metabisulfite
(Antioxidant, Preservative, Reducing)
4
6
B
Iodopropynyl Butylcarbamate
(Preservative)
2
B
Ammonium Acrylates Copolymer
(Binding Agent, Film Forming, Viscosity Increasing Agent, Antistatic Agent, Binding, Viscosity Controlling)
TOCOPHEROL
(Antioxidant, Fragrance, Skin Conditioning)
1
Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning)
3-O-ETHYL ASCORBIC ACID
(Skin Conditioning)
1
A
Sodium Hyaluronate
(Skin Conditioning, Humectant)
Good for Dry Skin
Good for Dry 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

Hyaluronic Acid
Hydrates by attracting and holding water.
Antioxidants
Shields skin from free radical damage.
Vitamin C
Brightens, evens tone, and supports collagen.
Vitamin E
Protects skin and soothes irritation.
Tranexamic Acid
Helps fade dark spots and even skin tone.

Benefits

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

Concerns

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

Ingredients explained

Water
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Tranexamic Acid
Cosmetic astringent, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Cosmetic astringentSkin conditioning
Diglycerin
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioningSolvent
Dipropylene Glycol
Fragrance, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSolventViscosity decreasing agentMaskingViscosity controlling
Sorbitol
Flavoring agent, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 Flavoring agentFragranceHumectantPlasticizerSkin conditioning
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
PPG-17-Buteth-17
Fragrance, Hair conditioning
Limited public safety data.Read moreShow less
EWG N/A FragranceHair conditioningSkin conditioningEmulsifyingSurfactant
Polyglyceryl-10 Eicosanedioate/Tetradecanedioate
Hair conditioning, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Hair conditioningSkin conditioning
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Diethoxyethyl Succinate
Solvent
Limited public safety data.Read moreShow less
EWG N/A Solvent
PPG-24-Glycereth-24
Solvent, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 SolventEmulsifyingSurfactant
Squalane
Emollient, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientHair conditioningRefattingSkin conditioning
Cetyl Alcohol
Emulsion stabilising, Fragrance
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingFragranceOpacifyingEmulsifyingSurfactantFoam boostingViscosity increasing agentEmollientMaskingViscosity controlling
Behenyl Alcohol
Binding agent, Emulsion stabilising
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Binding agentEmulsion stabilisingViscosity increasing agentBindingEmollientViscosity controlling
Polyquaternium-51
Film forming, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Film formingHumectantSkin conditioning
+ 7 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
Petrolatum
Hair conditioning, Skin-conditioning agent - occlusive
Potentially comedogenic - can block poresRead moreShow less
EWG 4 Hair conditioningSkin-conditioning agent - occlusiveSkin protectingEmollientMoisturisingUv absorber 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
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
PEG-20 Sorbitan Isostearate
Sufactant, Emulsifying
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR B SufactantEmulsifyingSurfactant
Methylparaben
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
Glyceryl Stearate
Emollient, Emulsifying
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A EmollientEmulsifying Fungal-acne trigger
Triethanolamine
Fragrance, Ph adjuster
Moderate-hazard ingredient.Read moreShow less
EWG 5 CIR B FragrancePh adjusterEmulsifyingSurfactantBuffering agentMasking
Iodopropynyl Butylcarbamate
Preservative
Moderate-hazard ingredient.Read moreShow less
EWG 4–6 CIR B Preservative
Sodium Hyaluronate
Skin conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningHumectant Good for Dry Skin

How to use

How to use

  • 1 Where it fits: Apply near the end of your routine, after thinner serums.
  • 2 Morning only: Apply as the last step of your AM routine, after moisturiser, and reapply every ~2 hours of sun exposure.

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.

3-O-ETHYL ASCORBIC 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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