Booster Serum

Muji

Where to buy Possibly in stock

About this product

The Muji Booster Serum is a emulsion. Our analysis of its 26 ingredients (23 low-risk) rates it Excellent (100/100). Based on its ingredients, it looks well-suited to dry skin.

Vegan-friendly Reef-safe

Summarised from our ingredient analysis — not brand marketing copy.

At a glance

Type
Emulsion
Ingredients
26
Low-risk
23
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 7/4
Good for dry skin
Diglycerin Dipotassium Glycyrrhizate Oleyl Alcohol Butylene Glycol Glycerin Hydrolyzed Hyaluronic Acid PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
Caution for dry skin
Xanthan Gum Glycerin Polysorbate 80 PEG-60 Hydrogenated Castor Oil
Oily/Acne-Prone Skin No data
Sensitive Skin 1/11
Good for sensitive skin
Glycerin
Caution for sensitive skin
Serine Sodium Glutamate Sodium Citrate Alanine Arginine Oleyl Alcohol Butylene Glycol Glycerin Proline Citric Acid PEG-60 Hydrogenated Castor Oil

Ingredients list

26 total
Lower hazard (1) Higher hazard (3)
All26 Skin Conditioning28 Fragrance10 Hair Conditioning10 Humectant8 Masking7 Solvent6 Viscosity Controlling4 Antistatic Agent3
EWG CIR Ingredient Name & Cosmetic Functions Notes
Rice Ferment Filtrate
(Skin Conditioning)
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
1
A
Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling)
Good for Dry Skin
Good for Dry Skin
1
Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling)
1
A
Pentylene Glycol
(Skin Conditioning, Solvent)
3
PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
(Humectant)
1
Ceramide NP
(Hair Conditioning, Skin Conditioning)
1
A
Alanine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Sodium Glutamate
(Fragrance, Hair Conditioning, Skin Conditioning, Masking)
1
A
Serine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking)
1
A
Proline
(Fragrance, Hair Conditioning, Skin Conditioning)
1
Hydrolyzed Hyaluronic Acid
(Hair Conditioning, Humectant, Skin Conditioning)
1
Yeast Extract
(Skin Conditioning)
1
A
Dipotassium Glycyrrhizate
(Flavoring Agent, Skin Conditioning, Humectant)
1
Diglycerin
(Humectant, Skin Conditioning, Solvent)
1
A
Ethylhexylglycerin
(Deodorant, Skin Conditioning)
Oryza sativa bran oil
(Skin Conditioning, Skin Conditioning Emollient)
1
A
Oleyl Alcohol
(Fragrance, Skin Conditioning, Emollient, Solvent, Viscosity Increasingagent Nonaqueous, Emulsifying, Opacifying, Viscosity Controlling)
Bad for Oily Skin
Bad for Oily Skin
3
B
Polysorbate 80
(Denaturant, Emulsifying, Surfactant)
Fungal Acne
Fungal Acne Trigger
PPG-7-Buteth-10
(Hair Conditioning, Skin Conditioning)
1
A
PPG-20 Methyl Glucose Ether
(Hair Conditioning, Skin Conditioning)
3
B
PEG-60 Hydrogenated Castor Oil
(Fragrance, Sufactant, Surfactant)
Fungal Acne
Fungal Acne Trigger
1
A
Xanthan Gum
(Binding Agent, Emulsion Stabilising, Skin Conditioning, Surfactant Emulsifying Agent, Viscosity Increasing Agent, Binding, Gel Forming, Viscosity Controlling)
2
A
Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking)
Bad for Sensitive Skin
Bad for Sensitive Skin
1
A
Sodium Citrate
(Ph Adjuster, Buffering Agent, Chelating, Masking)

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

Rice Ferment Filtrate
Skin Conditioning
Glycerin
Humectant, Skin Protecting
Butylene Glycol
Skin Conditioning, Humectant
Pentylene Glycol
Skin Conditioning
PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
Humectant
Ceramide NP
Skin Conditioning

Benefits

Good for dry skin

Concerns

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

Ingredients explained

Rice Ferment Filtrate
Skin conditioning
Limited public safety data.Read moreShow less
EWG N/A Skin conditioning
Propanediol
Solvent, Viscosity decreasing agent
Low-hazard ingredient.Read moreShow less
EWG 1 SolventViscosity decreasing agentViscosity controlling
Pentylene Glycol
Skin conditioning, Solvent
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Skin conditioningSolvent
PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
Humectant
Low-to-moderate hazard.Read moreShow less
EWG 3 Humectant
Ceramide NP
Hair conditioning, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningSkin conditioning
Alanine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Arginine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Sodium Glutamate
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningMasking
Serine
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioningAntistatic agentMasking
Proline
Fragrance, Hair conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceHair conditioningSkin conditioning
Hydrolyzed Hyaluronic Acid
Hair conditioning, Humectant
Low-hazard ingredient.Read moreShow less
EWG 1 Hair conditioningHumectantSkin conditioning
Yeast Extract
Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 Skin conditioning
Dipotassium Glycyrrhizate
Flavoring agent, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A Flavoring agentSkin conditioningHumectant
Diglycerin
Humectant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 HumectantSkin conditioningSolvent
Ethylhexylglycerin
Deodorant, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A DeodorantSkin conditioning
+ 5 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
Butylene Glycol
Fragrance, Skin conditioning
Low-hazard ingredient.Read moreShow less
EWG 1 CIR A FragranceSkin conditioningSolventViscositydecreasing agentHumectantMaskingViscosity controlling Good for Dry Skin
Oleyl Alcohol
Fragrance, Skin conditioning
Potentially comedogenic - can block poresRead moreShow less
EWG 1 CIR A FragranceSkin conditioningEmollientSolventViscosity increasingagent - nonaqueousEmulsifyingOpacifyingViscosity controlling Bad for Oily Skin
Polysorbate 80
Denaturant, Emulsifying
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B DenaturantEmulsifyingSurfactant Fungal-acne trigger
PEG-60 Hydrogenated Castor Oil
Fragrance, Sufactant
Low-to-moderate hazard.Read moreShow less
EWG 3 CIR B FragranceSufactantSurfactant Fungal-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

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.

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