Which of the following services is a role of a cosmetologist?

A cosmetologist is a professional who provides a variety of personal care services primarily focused on hair, skin, and nails. Specifically, cutting and coloring hair falls directly under the licensed practices of a cosmetologist. This includes styling hair, performing chemical treatments, and ensuring that clients achieve their desired looks through various techniques and products.

The other choices involve services that are typically outside the scope of a cosmetologist's training and licensure. For instance, administering injections is a medical procedure requiring different training and certification, while removing hair using laser technology is performed by licensed professionals such as estheticians or medical technicians who specialize in that area. Balancing chemical peels, while related to skin care, is more specialized and typically under the purview of estheticians with specific training rather than a general cosmetology license. Hence, cutting and coloring hair is the definitive role of a cosmetologist.