Question: Differences between cetrimonium bromide and cetrimonium chloride?

Kontakt asked this question: As I understand it, the only difference between centrimonium bromide and cetrimonium chloride is the negatively charged ion: chloride or bromide. What differs between these two compounds in effects, and why? In solutions, the ions should be free from each other so unless the chloride/bromide ion does something in itself, I…