How many dryers must a salon have?

In the context of salon regulations, it is important to understand the requirements for equipment, including dryers. The correct answer is that a salon must have at least one dryer. This ensures that there is a functional and available option for drying hair, contributing to the quality of service provided to clients.

Having at least one dryer is essential for maintaining efficiency in salon operations, as drying hair is a common part of many beauty treatments. While some salons might opt to have additional dryers to accommodate multiple clients simultaneously, the minimum requirement is just one. This regulation helps ensure that salons can operate effectively, providing necessary services without excessive inconvenience to clients.

The other choices indicate either a higher or nonexistent requirement that does not align with the established regulations for salon equipment. Providing at least one dryer is a fundamental aspect of ensuring a salon meets health, safety, and operational standards.