OriginDerived from fatty alcohols and stearic acid, typically sourced from coconut or palm oils. Synthesized through quaternization of dimethylamino stearic acid with methyl chloride.
Trimethyloctadecylammonium chloride
Formula
C21H46ClN
Mol. Weight
348.00
CAS #
112-03-8
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
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.
Preservative
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Reduces Static
Conditions Hair
Preserves Formula
Reduces flyaways
Softens and detangles hair
Prevents microbial growth
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
7
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Eye Irritant in Testing
4 studies / 4 irritating / reactions mild to severe (CIR 572)
Mixed Skin Irritation Results
4 studies / 2 irritating / 2 mixed / reactions severe (CIR 570 and 572)
Mixed Sensitization Results
3 studies / 1 sensitizing / 2 not sensitizing (CIR 570 and 572)
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