CETRIMONIUM CHLORIDE
Commonly Found In
Overview
Cetrimonium chloride is a quaternary ammonium cationic surfactant widely used as a hair conditioning and antistatic agent. Its positive charge adheres to negatively charged damaged hair, improving manageability and reducing frizz. It is restricted under EU Annex V as a cosmetic preservative. Primarily used in rinse-off conditioners and hair treatments.
Also known as: CTAC, cetyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, N,N,N-trimethyl-1-hexadecanaminium chloride
Key Benefits
Studies suggest cetrimonium chloride improves hair smoothness, detangling, and frizz control through electrostatic adsorption to damaged hair cuticles. Well-established conditioning efficacy in rinse-off products.
Supporting Research
- β’ Zviak C (1986): Review of cationic surfactants in hair conditioning β cetrimonium chloride reduces combing force by adsorption to hair surface
- β’ CIR Expert Panel β Safety Assessment of Cetrimonium Chloride: Assessed safe in rinse-off formulations
Skin Compatibility Ratings
Comedogenic Rating
Non-comedogenic; used mainly in hair conditioners at low concentrations.
Source: CIR Expert Panel safety assessment
Irritancy Rating
Moderate irritancy at higher concentrations; well tolerated in typical rinse-off formulations at 0.1β2%
Source: CIR Expert Panel
Typical Use Concentration
Range
0.1β2%
Optimal
0.25β1%
EU Annex V concentration limits apply as preservative. Typical conditioning use is 0.25β2% in rinse-off products.
Works Well With / Avoid
Works Well With
Avoid Combining
Use With Caution
EU Annex V: permitted as preservative. Primarily used as conditioning active at 0.1β2% in rinse-off products. Cationic; incompatible with anionic surfactants at high concentrations.
Commonly Found In
Global Regulation Summary
Overview of current status across major international markets.
Detailed Regional Status
| Region | Status | Max Conc. | Conditions | Source |
|---|---|---|---|---|
| πͺπΊ EU | Allowed | - | - | Official β |
| πΊπΈ USA | Allowed | - | - | Official β |
| π―π΅ Japan | Allowed | - | - | Official β |
| π°π· Korea | Unknown | - | - | Official β |
| π¬π§ UK | Banned | - | Follows EU regulations (V/44) | Official β |
π Why Regulations Differ
EU and Japan permit cetrimonium chloride with concentration limits. US has no specific restriction. Primarily a conditioning agent; well-established safety profile in rinse-off use.
Regulation Analysis
Regional Agreement
Banned in UK but allowed in EU, USA, Japan.
Category Comparison
There are 84 ingredients in the ANTIMICROBIAL category. 99% are banned in at least one major market.
Strictness Ranking
πΏ Natural Sources
Not found in nature. Synthetic quaternary ammonium compound. The cetyl chain is typically derived from natural palm or coconut oil fatty acids.
π How It's Made
Produced by reacting cetyl trimethylammonium with hydrochloric acid, or by direct quaternization of cetyl dimethylamine with methyl chloride.
π Uses in Cosmetics
Used primarily as a hair conditioning and antistatic agent in rinse-off conditioners and treatments. The cationic charge adsorbs to damaged hair, reducing static and improving combing ease. EU Annex V entry 44 permits it as a preservative at max concentration.
π¬ Other Applications
Used in fabric softeners, industrial cleaning products, and as an antimicrobial agent in swimming pool treatments and water purification.
π‘ Fun Facts
- β’ Cetrimonium chloride carries a positive electrical charge, which is why it clings to negatively charged damaged hair β making it the key ingredient in most conditioners
- β’ The reason shampoo strips hair and conditioner makes it smooth is largely due to the opposite electrical charges of their surfactants
- β’ It was one of the first cationic surfactants developed specifically for hair care in the 1940s
Data Sources
- β’ EU Cosmetics Regulation 1223/2009 Annex V entry 44
- β’ CIR Expert Panel β Safety Assessment of Cetrimonium Chloride
- β’ Zviak C (1986) β Hair conditioning review
Last data verification: 2026-04-16
Related Ingredients
CETRIMONIUM BROMIDE
UNDECYLENIC ACID
BENZALKONIUM CHLORIDE
BENZETHONIUM CHLORIDE
CAMPHOR BENZALKONIUM METHOSULFATE
CHLOROPHENE
Learn More
Frequently Asked Questions
What is CETRIMONIUM CHLORIDE used for in cosmetics?
CETRIMONIUM CHLORIDE is primarily used for antimicrobial in cosmetic products. It also serves as antistatic, preservative. The ingredient is commonly found in various cosmetic and personal care products.
Which countries regulate CETRIMONIUM CHLORIDE?
CETRIMONIUM CHLORIDE is banned in UK. The ingredient is freely allowed in EU, JP, US.
Are there alternatives to CETRIMONIUM CHLORIDE?
Due to regulatory restrictions on CETRIMONIUM CHLORIDE, cosmetic manufacturers often use alternative ingredients with similar functions. For antimicrobial, alternatives may include other approved ingredients in the same category. Consult product labels for specific formulations, and look for products compliant with your region's regulations.
Where can I find official regulation information about CETRIMONIUM CHLORIDE?
Official information about CETRIMONIUM CHLORIDE regulations can be found on government websites: EU CosIng database, US FDA Cosmetics page, Japan MHLW cosmetics standards, UK Government cosmetics guidance, and Korea MFDS. Always verify regulatory status with these official sources before making formulation decisions.
Disclaimer
The information on this website is for educational and informational purposes only and is not intended as medical advice. While we strive for accuracy based on official government databases, cosmetic regulations change frequently. Always consult with a qualified professional or refer to the latest official regulatory documents for compliance. We are not responsible for any actions taken based on the information provided here.