Science
Mechanism of Action
This ingredient reduces interfacial tension through its amphiphilic structure, comprising a hydrophilic head and hydrophobic tails, enabling emulsification, dispersion, and wetting. On skin and hair, it acts as a conditioning agent. Its antimicrobial action, typical for quaternary ammonium compounds, involves irreversibly binding to and disrupting microbial cell membranes, which leads to impaired permeability and cellular content leakage. Optimal antimicrobial efficacy for such compounds generally occurs with alkyl chain lengths between C12 and C16.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This compound exhibits robust chemical stability under typical processing conditions, making it suitable for standard cosmetic manufacturing.
Conflicts
- Anionic materials and ingredients, due to its inherent cationic charge.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has not directly assessed DI-C14-18 ALKYL DIMONIUM CHLORIDE, citing insufficient data for related compounds regarding particle size, formulation stability, repeated dose inhalation, and ocular irritation. The European Chemicals Agency (ECHA) classifies 'Quaternary ammonium compounds, di-C14-18-alkyldimethyl, chlorides' as causing severe skin burns and eye damage, skin irritation, and being harmful if swallowed, with potential for respiratory irritation. The Scientific Committee on Consumer Safety (SCCS) has not issued a direct opinion. The Environmental Working Group (EWG) designates this ingredient as 'unacceptable' for its VERIFIED products due to concerns including low neurotoxicity, low endocrine disruption, low-moderate non-reproductive organ system toxicity, and notes animal studies showing reproductive effects at moderate doses. INCIDecoder also rates its irritancy as high.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Due to a lack of comprehensive safety data, ECHA classification for severe skin burns and eye damage, high irritancy, and documented reproductive effects in animal studies, this ingredient is not recommended for use in skincare formulations.
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