All of the following are products used to perform a basic manicure EXCEPT:

In the context of a basic manicure, the primary focus is on enhancing the appearance and health of the natural nails, as well as providing care for the cuticles and surrounding skin. The products typically used in a basic manicure include nail polish remover for cleaning the nails, cuticle oil for moisturizing and softening the cuticles, and nail files for shaping the nails.

Primer, on the other hand, is generally used in more advanced nail services, such as applying artificial nails or gel polishes. It acts as a bonding agent to enhance the adhesion of products to the nail surface. While crucial in certain nail applications, it is not a standard component in a basic manicure, which revolves around natural nail care and maintenance. This distinction makes primer the correct answer in identifying the product not utilized in a basic manicure setting.