Laurtrimonium Bromide
AKA “Dodecyltrimethylammonium bromide, 1119-94-4, Dctab, DTAB, LTAB, Lauryltrimethylammonium bromide, Morpan D, 1-Dodecanaminium, N, N-trimethyl-, bromide, DTAB (surfactant)”
Preservative
Ingredient Facts
Laurtrimonium bromide
AKA: Dodecyltrimethylammonium bromide, 1119-94-4, Dctab, DTAB, LTAB, Lauryltrimethylammonium bromide, Morpan D, 1-Dodecanaminium, N-trimethyl-, DTAB (surfactant)
Preservative · Preservative · EWG: 4
Synthetic
Preservative
Skin Conditioner
Hair Care
Plant Oil
Not Clean
Dodecyltrimethylammonium bromide
Formula
C15H34BrN
Mol. Weight
308.34
CAS #
1119-94-4
Form
Liquid
State
Liquid
See origin →
Functions
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.
Conditions Hair
Preserves Formula
Softens and detangles hair
Prevents microbial growth
Traditional Use
Synthetic quaternary ammonium salt developed in mid-20th century cosmetic chemistry as a conditioning and anti-static agent for hair care formulations.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.1%
0%0%
Reg. Limit
EU regulatory limit: 0.1%. Source: EU Cosmetics Regulation (EC) 1223/2009, Annex V (Preservatives), Entry 44.
Regulatory Agencies
Final Report on the Safety Assessment of Cetrimonium Chloride, Cetrimonium Bromide, and Steartrimonium Chloride
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Benzalkonium Bromide
European Commission
EU Cosmetic Ingredient Database (CosIng)
Cetearalkonium Bromide
European Commission
EU Cosmetic Ingredient Database (CosIng)
Cetrimonium Bromide
European Commission
EU Cosmetic Ingredient Database (CosIng)
Laurtrimonium Bromide
European Commission
EU Cosmetic Ingredient Database (CosIng)
Myrtrimonium Bromide
European Commission
EU Cosmetic Ingredient Database (CosIng)
Steartrimonium Bromide
European Commission
EU Cosmetic Ingredient Database (CosIng)
Cetrimonium Bromide
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Myrtrimonium Bromide
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Steartrimonium Bromide
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Benzilonium bromide
Health Canada
Health Canada Cosmetic Ingredient Hotlist
Tetrylammonium bromide
Health Canada
Health Canada Cosmetic Ingredient Hotlist
In vitro and in vivo Evaluation of the Bioactive Nanofibers-Encapsulated Benzalkonium Bromide for Accelerating Wound Repair with MRSA Skin Infection.
Ran L, Peng SY, Wang W, Wu Q, Li YC et al.
International journal of nanomedicine, 2022
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR