Final answer:
The safety of pedicure chairs and hair dryers is certified by organizations such as Underwriters Laboratories (UL), American National Standards Institute (ANSI), and British Standards Institution (BSI).
Step-by-step explanation:
The safety of pedicure chairs and hair dryers is certified by various organizations that focus on the health and safety of the beauty industry. One well-known organization is the Underwriters Laboratories (UL), which is a nonprofit organization that conducts safety testing and certification for a wide range of products, including pedicure chairs and hair dryers. UL tests these products to ensure they meet specific safety standards, such as electrical safety, fire safety, and performance.
Another organization that certifies the safety of pedicure chairs is the American National Standards Institute (ANSI). ANSI develops safety and performance standards that manufacturers must comply with in order to receive certification. They test aspects such as the durability, stability, and proper functioning of the chairs.
For hair dryers, the British Standards Institution (BSI) is an organization that provides certification for various electrical appliances, including hair dryers. They test these products for safety, performance, and energy efficiency.