Regarding safety features, which is essential for salon doors?

Salons are required to have self-closing doors as a safety feature to prevent unauthorized access, maintain salon temperature, and ensure that chemicals and products do not escape the intended area. Self-closing doors enhance client safety by minimizing the risk of accidents and exposure to hazardous materials, while also helping to preserve the salon environment.

In contrast, other features listed may not address crucial safety concerns. Sound isolation, while beneficial for comfort, does not directly relate to safety protocols; decorative features do not have an impact on functionality or safety; and easily removable doors could pose risks by allowing uncontrolled access or egress, undermining the safety measures in a professional salon setting. Thus, self-closing doors are the essential requirement for safety in a salon environment.