Final answer:
The correct choice to discard after use on a nail service client is the single-use item. Single-use items cannot be sanitized and must be thrown away to maintain hygiene and prevent the spread of infections.
Step-by-step explanation:
The item that must be discarded after use on a nail service client is the single-use item. Items such as nail clippers, glass nail files, and metal cuticle pushers can often be sanitized and sterilized for use with multiple clients if they are made of non-porous materials and the salon follows strict hygiene protocols. However, single-use items, designed to be disposable, cannot be properly sanitized and must be thrown away after one use to prevent the potential spread of infections and maintain a hygienic environment.
Additionally, it is essential for nail technicians to follow hygienic practices such as wearing gloves, using autoclaves for sterilization, and avoiding toxic substances in nail products. The cuticle should not be cut during a manicure because it can lead to infections, and the part of the nail that is trimmed is the nail plate, which is composed of dead cells.