OriginSynthesized from benzyl chloride and alkyldimethylamines, belonging to the quaternary ammonium compound family. Produced through quaternization reactions that combine alkyl halides with tertiary amines under controlled conditions.
Benzalkonium Bromide is the mixture of alkylbenzyldimethylammonium bromides that conforms generally to the formula:
Formula
C21H38BrN
Mol. Weight
384.40
CAS #
91080-29-4
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
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
Deodorant
Preservative
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Fights Bacteria
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed0 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
3
CIR
Insufficient data · CIR tentative re-review report (2026)
Pregnancy
Caution
Concentration Guide
0%50%100%
Reg. limit 3%
CIR's newest survey reports no concentration of use.
CIR · 2025 survey
EU regulatory limit: 3%. Avoid contact with the eyes Source: EU Cosmetics Regulation (EC) 1223/2009, Annex III (Restricted Substances), Entry 65
murphy