Behenyl Pg-Trimonium Chloride
INCI: BEHENYL PG-TRIMONIUM CHLORIDE
Reviewed by Daisy · Last updated 14 Aug 2026
A conditioning agent that helps stabilise formulations and improve texture
Best For Skin Types
All, Oily, Dry, Combination, Sensitive, Mature, Acne-prone
Effective Concentrations
1-5%
Usage Frequency
Daily
What Is Behenyl Pg-Trimonium Chloride?
Behenyl PG-trimonium chloride is a quaternary ammonium compound derived from behenyl alcohol, a long-chain fatty alcohol. It functions as a cationic surfactant, meaning it carries a positive charge that allows it to interact with other ingredients and skin surfaces in specific ways.
In cosmetic formulations, it serves multiple roles: it can reduce static electricity in products, act as an emulsifier to help blend oil and water-based ingredients, and provide conditioning properties. It is commonly found in leave-on skincare products rather than rinse-off formulations.
How It Works
Behenyl PG-trimonium chloride works through its chemical structure. The positive charge on the molecule allows it to bind loosely to skin and hair surfaces, which have a slight negative charge. This interaction creates a thin, conditioning layer that can reduce friction and improve how a product spreads and feels during application.
In formulations, it also helps stabilise the mixture by allowing water-based and oil-based components to coexist more effectively, preventing separation over time.
Clinical Evidence & References
Safety assessments have been conducted on leave-on skincare products containing behenyl PG-trimonium chloride at concentrations between 1-5%. In vitro testing and clinical evaluations suggest that at these concentrations, the ingredient is non-irritating to skin, including in individuals with compromised skin barriers.
Post-marketing adverse event data support a profile of good tolerability when used in leave-on formulations. However, research specifically investigating its cosmetic efficacy in skincare is limited, so claims about its conditioning benefits are primarily based on its known chemical properties rather than extensive clinical studies.
Published Research
How to Use
As this is typically a formulation ingredient rather than an active, you won't encounter it as a standalone product. When it appears in leave-on lotions or serums, it simply forms part of the overall formula. There is no special usage guidance required; apply products containing this ingredient as directed by the manufacturer.
Safety & Precautions
Frequently Asked Questions
From the Clinic
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