Cetrimonium Methosulfate

AKA: Hexadecyltrimethylammonium methyl sulphate, 1-Hexadecanaminium, Methyl sulfate, CRODAZOSOFT DBQ, Ammonium, Hexadecyltrimethyl, Cetyltrimethylammonium methosulfate, CETYLTRIMETHYLAMMONIUM MESYLATE
Synthetic
Preservative
Cleanser
Emulsifier
Skin Conditioner
Hair Care
Not Clean
Hexadecyltrimethylammonium methyl sulphate
Formula
C20H45NO4S
Mol. Weight
395.60
CAS #
65060-02-8
Form
Powder
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.
EWG
3
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-3
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper
⚖️Regulatory1 listing
🛡️Safety-assessed2 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR