Cetrimonium Methosulfate
AKA “Hexadecyltrimethylammonium methyl sulphate, methyl sulfate, UNII-277IG2X9QC, CRODAZOSOFT DBQ, EINECS 265-352-1, Ammonium, hexadecyltrimethyl
Synthetic
Ingredient Facts
Cetrimonium methosulfate
AKA: Hexadecyltrimethylammonium methyl sulphate, Methyl sulfate, UNII-277IG2X9QC, CRODAZOSOFT DBQ, EINECS 265-352-1, Ammonium, Hexadecyltrimethyl
Synthetic · Antimicrobial · EWG: 3
Synthetic
Preservative
Cleanser
Emulsifier
Skin Conditioner
Hair Care
Synthetic
Clean
A gentle cleansing agent that conditions hair, reduces frizz and static, and helps blend ingredients together for a smooth product texture.
Formula
C20H45NO4S
Mol. Weight
395.60
CAS #
65060-02-8
Form
Powder
See origin →
Functions
Antimicrobial
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Antistatic
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Fights Bacteria
Traditional Use
Created as a synthetic conditioning agent for modern cosmetics. Designed to provide antistatic and detangling properties similar to natural conditioning agents.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
3
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-3
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
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Acrylamide/Ammonium Acrylate Copolymer
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EWG Skin Deep Cosmetics Database
Acrylates/Ammonium Methacrylate Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Acrylates Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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Environmental Working Group (EWG)
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Ammonium Cocoyl Isethionate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Glycolate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Glycyrrhizate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Hydroxide
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Lactate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Laureth Sulfate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Lauroyl Sarcosinate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Lauryl Sulfate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Myreth Sulfate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Persulfate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Polyacrylate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Polyacryloyldimethyl Taurate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Stearate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Ammonium Styrene/Acrylates Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR