Which of the following is NOT a product used to perform a basic manicure?

Primer is not a product typically used in a basic manicure. A basic manicure focuses on the care and appearance of the natural nails and surrounding skin. The primary products used during this process include nail oil to moisturize the nails and cuticles, remover to eliminate any old nail polish, and a top coat to provide a protective finish and enhance shine.

Primer, on the other hand, is primarily used in nail enhancements, such as acrylic or gel applications, where it serves to improve the adhesion of products to the nail surface. In the context of a basic manicure, primer is unnecessary, as it is not involved in the usual processes of cleaning, shaping, buffing, and polishing the natural nails.