A quaternary ammonium salt used as a preservative and conditioning agent.
What it is
Cetrimonium bromide (hexadecyltrimethylammonium bromide) is a cationic quaternary ammonium salt. CosIng lists it as antimicrobial, antistatic, emulsifying surfactant and preservative. In the EU it is listed in Annex V (allowed preservatives).
Where it is used
Used in hair conditioners, hair masks, shampoos and some skin care products.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
See the EU regulation section for the applicable limits. The label does not show the concentration actually used.
Functions
- Antimicrobial
- Preventing and/or slowing down microbial growth.
- Antistatic
- Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.
- Surfactant – emulsifying
- Helping suspensions or dispersions of liquids in a second liquid by reducing the surface tension of the substances to be emulsified.
- Preservative
- Exclusively or mainly intended to inhibit the development of micro-organisms in the cosmetic product. All authorised preservatives are substances in the positive list of Annex V to the Cosmetics Regulation 1223/2009.
EU regulation
EU · Annex V, entry 44Alkyl (C12-C22) trimethyl ammonium bromide and chloride
- Maximum concentration
- 0.1%
- As of
- 3 November 2026 · (EU) 2014/866
Products with this ingredient (45)
- Płyn micelarny 3w1 · Eveline Cosmetics
- Odświeżająco-łagodzący aloesowy płyn micelarny 3w1 · Eveline Cosmetics
- Profesjonalny płyn micelarny do demakijażu twarzy, oczu i ust 3w1 · Eveline Cosmetics
- Intensywnie regenerujący płyn micelarny · Eveline Cosmetics
- Hialuronowy płyn micelarny 3w1, wersja mini · Eveline Cosmetics
- Profesjonalny płyn micelarny do demakijażu, wersja mini · Eveline Cosmetics
- Hialuronowy płyn micelarny · Eveline Cosmetics
- Regenerujący płyn micelarny do demakijażu z bakuchiolem · Eveline Cosmetics
- Oczyszczający płyn micelarny · Eveline Cosmetics
- Nawilżający płyn micelarny · Eveline Cosmetics
- Rozświetlający płyn micelarny · Eveline Cosmetics
- Clean Shot Tonik-hydrolat · Eveline Cosmetics

