Muji booster serum
Muji muji booster serum lists 26 ingredients on its label, 24 decoded. See what each one does, its irritancy and comedogenic tendency, and its status in national inventories.
Ingredients overview
Label order. Colour is our internal rating: green routine, yellow restricted or worth a look, red prohibited or high-risk, grey not yet decoded.
Ingredients are listed in label order; the order reflects the label only, not exact concentrations.
- Saccharomyces
- Glycerin
- Butylene Glycol
- Propanediol
- Pentylene Glycol
- PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
- Ceramide NP
- Alanine
- Arginine
- Sodium Glutamate
- Serine
- Proline
- Hydrolyzed Hyaluronic Acid
- Yeast Extract
- Dipotassium Glycyrrhizate
- Diglycerin
- Ethylhexylglycerin
- Oryza Sativa Bran Oil
- Oleyl Alcohol
- PPG-7-Buteth-10
- PPG-20 Methyl Glucose Ether
- Polysorbate 80
- PEG-60 Hydrogenated Castor Oil
- Xanthan Gum
- Citric Acid
- Sodium Citrate
Highlights
Free of alcoholFree of siliconesFree of sulfatesFree of mineral oilFree of essential oilsFree of formaldehyde releasersContains PEGContains fragranceContains parabens
Formulation view Features yeast filtrate as the core, combined with amino acids and hyaluronic acid. Includes ceramide NP for barrier repair and light esters for moisture. Focuses on repair and deep hydration, suitable for compromised barriers and mature skin. Factory view: Precise matching of yeast filtrate and ceramide is required to ensure lipid stability and prevent viscosity issues from high hygroscopicity.
Key ingredients
- ANTIMICROBIAL
- Saccharomyces
- DENATURANT
- Glycerin
- HUMECTANT
- Butylene GlycolPEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
- SOLVENT
- Propanediol
- SKIN CONDITIONING
- Pentylene Glycol
- HAIR CONDITIONING
- Ceramide NP
- ANTISTATIC
- Alanine
Other ingredients
ArginineSodium GlutamateSerineProlineHydrolyzed Hyaluronic AcidYeast ExtractDipotassium GlycyrrhizateDiglycerinEthylhexylglycerinOryza Sativa Bran OilOleyl AlcoholPPG-7-Buteth-10PPG-20 Methyl Glucose EtherPolysorbate 80PEG-60 Hydrogenated Castor OilXanthan GumCitric AcidSodium Citrate
Skim through
| Ingredient | What it does | Irr. · Com. | Rating |
|---|---|---|---|
| Saccharomyces | ANTIMICROBIAL, ANTI-SEBUM, BINDING, SKIN PROTECTING | 1 · 0 | Green |
| Glycerin | DENATURANT, HAIR CONDITIONING, HUMECTANT, ORAL CARE, SKIN PROTECTING, SOLVENT, VISCOSITY CONTROLLING, PERFUMING, FRAGRANCE, SKIN CONDITIONING - HUMECTANT | 0 · 0 | Green |
| Butylene Glycol | HUMECTANT, FRAGRANCE, SKIN CONDITIONING, SOLVENT, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Propanediol | SOLVENT, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Pentylene Glycol | SKIN CONDITIONING, SOLVENT | 0 · 0 | Green |
| PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin | HUMECTANT | 0 · – | Green |
| Ceramide NP | HAIR CONDITIONING, SKIN CONDITIONING - MISCELLANEOUS | 0 · 0 | Green |
| Alanine | ANTISTATIC, HAIR CONDITIONING, FRAGRANCE, SKIN CONDITIONING | 0 · 0 | Green |
| Arginine | ANTISTATIC, HAIR CONDITIONING, FRAGRANCE, SKIN CONDITIONING | 0 · 0 | Green |
| Sodium Glutamate | HAIR CONDITIONING, FRAGRANCE, SKIN CONDITIONING | 0 · 0 | Green |
| Serine | ANTISTATIC, HAIR CONDITIONING, FRAGRANCE, SKIN CONDITIONING | 0 · – | Green |
| Proline | HAIR CONDITIONING, SKIN CONDITIONING | 0 · 0 | Green |
| Hydrolyzed Hyaluronic Acid | HAIR CONDITIONING, HUMECTANT, SKIN CONDITIONING | 0 · 0 | Green |
| Yeast Extract | SKIN CONDITIONING, SKIN PROTECTING | 0 · 0 | Green |
| Dipotassium Glycyrrhizate | HUMECTANT, SKIN CONDITIONING | 0 · 0 | Green |
| Diglycerin | HUMECTANT, SKIN CONDITIONING | 0 · 0 | Green |
| Ethylhexylglycerin | DEODORANT, SKIN CONDITIONING | 0 · 0 | Green |
| Oryza Sativa Bran Oil | SKIN CONDITIONING - EMOLLIENT, SKIN CONDITIONING | 0 · 3 | Green |
| Oleyl Alcohol | SKIN CONDITIONING - EMOLLIENT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING, PERFUMING | 0 · 1 | Green |
| PPG-7-Buteth-10 | Not decoded yet | — | — |
| PPG-20 Methyl Glucose Ether | Not decoded yet | — | — |
| Polysorbate 80 | DENATURANT, SURFACTANT - EMULSIFYING, SURFACTANT - CLEANSING | 0 · 0 | Green |
| PEG-60 Hydrogenated Castor Oil | SURFACTANT - EMULSIFYING, SURFACTANT - CLEANSING | 1 · 0 | Green |
| Xanthan Gum | BINDING, SURFACTANT - EMULSIFYING, EMULSION STABILISING, GEL FORMING, SKIN CONDITIONING, SURFACTANT - CLEANSING, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Citric Acid | BUFFERING, CHELATING, FRAGRANCE | 1 · 0 | Green |
| Sodium Citrate | BUFFERING, CHELATING, FRAGRANCE | 0 · 0 | Green |
Ingredients explained
- Saccharomyces
- Yeast by-product; antibacterial and sebum control; check protein residues
- Glycerin
- Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives
- Butylene Glycol
- Polyol humectant and solvent at 1–5%; aids solubilization, light feel
- Propanediol
- Polyol solvent at 1–5%; light feel, aids solubilization, propylene glycol alternative
- Pentylene Glycol
- Polyol humectant at 1-3%; low irritancy, suitable for sensitive skin
- PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
- PEG/PPG polybutylene glycerin humectant; monitor PEG oxidation and stability.
- Ceramide NP
- Ceramide N3 for barrier repair; lipophilic, needs oil phase or emulsion, avoid high standalone use.
- Alanine
- Amino acid for antistatic and conditioning; low irritation, slight salty taste at high levels
- Arginine
- Arginine for moisturizing/conditioning; amino acid, high biocompatibility, often used in blends.
- Sodium Glutamate
- Flavoring agent & humectant, food-grade, non-irritating, often used for masking.
- Serine
- Humectant amino acid, 1–3%; high water solubility, compatible with sensitive skin.
- Proline
- Proline, amino-acid humectant; boosts stratum corneum hydration, stable at pH 4-5.
- Hydrolyzed Hyaluronic Acid
- Low-MW humectant with superior penetration vs high-MW; 0.1-0.5% typical, hygroscopic, store dry to prevent clumping.
- Yeast Extract
- Yeast extract for skin care and protection; common, low allergy risk
- Dipotassium Glycyrrhizate
- Dipotassium glycyrrhizinate for moisturizing/soothing; inhibits 5-LOX, water-soluble, for sensitive skin.
- Diglycerin
- Diglycerin humectant and conditioner; low viscosity suitable for liquid formulas, very low irritancy.
- Ethylhexylglycerin
- Mild conditioner and preservative booster at 0.5–1%; reduces preservative load, smooth feel
- Oryza Sativa Bran Oil
- Rice bran oil rich in oryzanol and linoleic acid for conditioning; moderate comedogenic rating, mind oxidative stability.
- Oleyl Alcohol
- Oleic acid derivative acting as emulsifier, thickener, and perfume; mild and low comedogenic risk, often paired with oleic acid.
- PPG-7-Buteth-10
- Not decoded yet
- PPG-20 Methyl Glucose Ether
- Not decoded yet
- Polysorbate 80
- Non-ionic emulsifier and solubilizer; watch for interaction with parabens
- PEG-60 Hydrogenated Castor Oil
- Non-ionic emulsifier and solubilizer at 1–5%; contains PEG, check acid compatibility and sensitive skin irritation
- Xanthan Gum
- Natural thickener at 0.1–1%; provides gel texture, pH-stable, requires full hydration
- Citric Acid
- Buffer and chelator at 0.1–2%; adjusts pH, may irritate sensitive skin at low pH
- Sodium Citrate
- Sodium citrate for buffering and chelating; adjust pH, careful with strong acid reactions.
Source: full ingredient list published on the product label, collected 2026-09-17. Ratings are our internal reading, not a regulatory conclusion. · Product page
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