Arkansas Cosmetology Practice Exam 2026 – Complete All-in-One Guide to Exam Success!

Disinfectant solutions should be changed at least once each week to ensure their efficacy and prevent bacteria buildup. Option A is incorrect because disinfectant solutions can lose their effectiveness after one use, especially if they come into contact with contaminants. Option B is not frequent enough as bacteria and viruses can still grow within a month's time. Option D is incorrect because even if the solution is used properly, it can still become contaminated with repeated use and will need to be changed.