What types of containers are prohibited for carrying combs and instruments?

The prohibition of using pockets and cases for carrying combs and instruments aligns with the emphasis on maintaining hygiene and preventing contamination in the cosmetology industry. Pockets and cases, while they may seem convenient, can harbor bacteria and other contaminants due to their often porous nature or lack of proper sealing. This makes them unsuitable for storing personal grooming tools that should remain sanitary for client safety.

On the other hand, plastic bags, sealed boxes, and glass containers generally provide better protection from contamination. Plastic bags can be disposed of after single use, which prevents cross-contamination. Sealed boxes and glass containers can minimize exposure to dirt and germs, thereby maintaining a safer and cleaner environment for clients and professionals alike. Therefore, it's critical to use containers designed to maintain the sterility and safety of combs and instruments rather than informal storage options that do not meet hygiene standards.