Final answer:
Bar soaps should be avoided in the salon due to reasons like accumulation of dirt and bacteria, potential contamination, and increased risk of cross-contamination.
Step-by-step explanation:
Bar soaps should be avoided in the salon because they have a few disadvantages compared to liquid soaps. One of the main reasons is that bar soaps can accumulate dirt and bacteria on their surface, which can then be transferred to the skin of the clients. Additionally, bar soaps can become a breeding ground for microorganisms if not stored properly, potentially leading to contamination. Lastly, bar soaps can be less hygienic because they are often shared among clients, increasing the risk of cross-contamination.