Underarm Brightening Serum

Koji White

Where to buy Possibly in stock

About this product

The Koji White Underarm Brightening Serum is a emulsion. Our analysis of its 25 ingredients (16 low-risk) rates it Excellent (94/100). 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
Emulsion
Ingredients
25
Low-risk
16
Fragrance
Fragrance-free
Origin
Thailand

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
Glycereth-26 Silanediol Salicylate Ethoxydiglycol Butylene Glycol Glycerin Sodium Lactate
Caution for dry skin
Alpha-Glucan Oligosaccharide Glycerin Tranexamic Acid
Oily/Acne-Prone Skin 1/0
Good for oily/acne-prone skin
Tranexamic Acid
Sensitive Skin 2/5
Good for sensitive skin
Kojic Acid Glycerin
Caution for sensitive skin
Kojic Acid Ethoxydiglycol Butylene Glycol Glycerin Phenoxyethanol

Ingredients list

25 total
Lower hazard (1) Higher hazard (7)
All25 Skin Conditioning16 Solvent6 Humectant6 Fragrance4 Viscosity Controlling3 Viscosity Decreasing Agent3 Hair Conditioning2 Smoothing2
EWG CIR Ingredient Name & Cosmetic Functions Notes
1
Water
(Solvent)
1
A
Niacinamide
(Hair Conditioning, Skin Conditioning, Smoothing)
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Glycereth-26
(Humectant, Viscosity Decreasing Agent, Solvent, Viscosity Controlling)
Tranexamic Acid
(Cosmetic Astringent, Skin Conditioning)
4
A
Phenoxyethanol
(Fragrance, Preservative)
Paraben
Paraben
Potassium Methoxysalicylate
(Bleaching)
1
A
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling)
1
Alpha-Glucan Oligosaccharide
(Cleansing, Skin Conditioning, Smoothing)
2
A
Chlorphenesin
(Cosmetic Biocide, Antimicrobial, Preservative)
1
A
Ethoxydiglycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Humectant, Perfuming)
2
A
Tetrasodium EDTA
(Chelating Agent)
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
B
Sodium Lactate
(Buffering Agent, Exfoliant, Humectant, Keratolytic)
1
Methylpropanediol
(Solvent)
6
7
B
Kojic Acid
(Antioxidant)
Good for Dry Skin
Good for Dry Skin
Lens Esculenta Seed Extract
(Skin Protecting)
Enantia Chlorantha Bark Extract
(Skin Conditioning)
Saccharomyces/Persimmon Fruit Juice Ferment Extract
(Deodorant)
Ananas Sativus Fruit Extract
(Skin Conditioning)
1
Carica Papaya (Papaya) Fruit Extract
(Skin Conditioning)
Mangifera Indica Fruit Extract
(Skin Conditioning)
1
Silanediol Salicylate
(Skin Conditioning, Emollient)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
1
Oleanolic Acid
(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

Niacinamide
Skin Conditioning
Butylene Glycol
Skin Conditioning, Humectant
Glycereth-26
Humectant
Tranexamic Acid
Skin Conditioning
Alpha-Glucan Oligosaccharide
Skin Conditioning
Ethoxydiglycol
Humectant

Benefits

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

Concerns

Contains paraben
Not fungal acne (malassezia) safe
Kojic Acid — 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
Niacinamide
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Hair conditioningSkin conditioningSmoothing
Glycereth-26
Humectant, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantViscosity decreasing agentSolventViscosity controlling
Tranexamic Acid
Cosmetic astringent, Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Cosmetic astringentSkin conditioning
Potassium Methoxysalicylate
Bleaching
Limited public safety data.Read moreShow less
EWG N/A Bleaching
Carbomer
Emulsion stabilising, Viscosity increasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Emulsion stabilisingViscosity increasing agentGel formingViscosity controlling
Alpha-Glucan Oligosaccharide
Cleansing, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CleansingSkin conditioningSmoothing
Chlorphenesin
Cosmetic biocide, Antimicrobial
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Cosmetic biocideAntimicrobialPreservative
Ethoxydiglycol
Fragrance, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSolventViscosity decreasing agentHumectantPerfuming
Tetrasodium EDTA
Chelating agent
Low-hazard ingredient.Read moreShow less
EWG 2 CIR A Chelating agent
Sodium Lactate
Buffering agent, Exfoliant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B Buffering agentExfoliantHumectantKeratolytic
Methylpropanediol
Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 Solvent
Lens Esculenta Seed Extract
Skin protecting
Limited public safety data.Read moreShow less
EWG N/A Skin protecting
Enantia Chlorantha Bark Extract
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Saccharomyces/Persimmon Fruit Juice Ferment Extract
Deodorant
Limited public safety data.Read moreShow less
EWG N/A Deodorant
+ 6 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
Phenoxyethanol
Fragrance, Preservative
Low-to-moderate hazard.Read moreShow less
EWG 4 CIR A FragrancePreservative Paraben
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
Kojic Acid
Antioxidant
Higher-hazard ingredient.Read moreShow less
EWG 6–7 CIR B Antioxidant Good for Dry Skin

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

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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