Benzalkonium chloride
BACBZKAlkyl dimethyl benzyl ammonium chloride
Preservative
Benzalkonium chloride is a type of chemical that helps prevent the growth of bacteria and other microorganisms in products like cosmetics and cleaning supplies. It works by breaking down the cell walls of these tiny organisms, making it hard for them to survive.
Moderate Concern
Source: EWG Skin Deep
The concern with benzalkonium chloride is that it can cause skin irritation and allergic reactions in some people, especially if used in high concentrations or for extended periods.
bkc80 Benzalkonium Chloride (BKC)CAS No.：8001-54-5
chen Carine
No result found for this ingredient.
Can the choice of artificial tears harm patients? A narrative review with an overview of the Nordic market.
Mikha KN, Rasmussen CEØ, Ahrensberg SNG
2025
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Last updated: May 16, 2026