Final answer:
Bleach in professional salon, spa, or barbershop settings must be registered as a disinfectant with the EPA to ensure that it meets health and safety standards.
Step-by-step explanation:
Bleach used in the salon, spa, or barbershop must be EPA registered as a disinfectant. This is crucial for ensuring that the bleach is effective in eliminating harmful germs and maintaining hygienic practices in these settings. Bleach is commonly known for its ability to clean and remove stains, typically consisting of a dilute solution of sodium hypochlorite, also referred to as "liquid bleach".
For professional use, especially where it comes into contact with skin and tools used on multiple clients, it's important that the product meets the stringent requirements set by the Environmental Protection Agency (EPA).