Illinois Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The use of 70% isopropyl alcohol for sanitizing brushes used in makeup applications is preferred because it effectively kills a wide range of microorganisms, including bacteria and viruses, without damaging the bristles of the brushes. Isopropyl alcohol at this concentration has been shown to be the most effective in penetrating the cell membranes of microbes and ensuring thorough disinfection.

When considering other options, while soap and water can help remove dirt and makeup residue, they do not possess the necessary antimicrobial properties required for proper sanitation. Disinfectant wipes, though useful for convenient cleaning, may not provide the same level of penetration and efficacy against all types of pathogens compared to isopropyl alcohol. Lastly, hot water and vinegar are not recognized as effective sanitizing agents for makeup tools, as vinegar does not possess sufficient antibacterial properties for sanitization purposes.

Thus, using 70% isopropyl alcohol ensures that the brushes are not only clean but also sanitized, reducing the risk of spreading bacteria and maintaining a hygienic makeup application environment.