Which of the following substances is prohibited in the salon?

The correct answer identifies substances that are specifically prohibited in nail salons due to safety and health concerns. MMA (methyl methacrylate), formalin tablets, and certain fumigants have been found to pose significant risks to both clients and nail technicians.

MMA is known to be a harmful chemical that can cause respiratory issues, skin irritations, and other health complications. Its use in nail products has been banned in many states because it does not adhere properly to the nail, leading to potentially unsafe applications.

Formalin, which is a strong chemical used for various industrial purposes, can release formaldehyde—a known carcinogen—into the air. Fumigants can also be hazardous, as they may release toxic substances that can lead to respiratory and other health issues.

In contrast, hydrogen peroxide, vitamin E oils, and olive oil are commonly used in nail care and are typically considered safe when used as directed. These substances serve various functions, such as cleaning, moisturizing, or providing treatment, without posing the same level of health risks associated with the prohibited substances. Thus, the recognition of MMA, formalin tablets, and fumigants as prohibited ensures a safer environment for both clients and technicians in the salon.