Steartrimonium Bromide

AKA “1120-02-1, Octadecyltrimethylammonium bromide, BPW1DD4IZ8, CATINAL STB, DTXSID40883652, ODTEA Br cpd, RefChem:889163, DTXCID701023159, 214-294-5”

Preservative

Ingredient Facts

Steartrimonium bromide

AKA: 1120-02-1, Octadecyltrimethylammonium bromide, BPW1DD4IZ8, CATINAL STB, DTXSID40883652, ODTEA Br cpd, RefChem:889163, DTXCID701023159, 214-294-5

Preservative · Preservative · EWG: 3

Plant-Derived

Preservative

Skin Conditioner

Hair Care

Not Clean

Trimethyloctadecylammonium bromide

Formula

C21H46BrN

Mol. Weight

392.50

CAS #

1120-02-1

Form

Liquid

See origin →

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

Traditional Use

Developed in the 1950s as a quaternary ammonium compound for hair and skincare. Created to provide antistatic and conditioning properties, replacing some traditional botanical surfactants.