Which of the following should NOT be used to clean the toenail plate?

Using paraffin to clean the toenail plate is not appropriate because paraffin is a waxy substance primarily used for moisturizing the skin and nails, rather than for cleaning. Its purpose is to create a barrier and provide hydration, particularly during spa treatments, but it does not have cleaning properties.

In contrast, soaking baths are used to help soften the skin and nails, making them easier to clean. Cuticle removers are designed specifically to break down dead skin around the nail area, allowing for clearer access to the actual toenail plate itself and promoting hygiene. Polish remover, often containing acetone or non-acetone solvents, is meant to dissolve nail polish and can clean the toenail plate effectively by removing any residue. Therefore, for cleaning purposes, paraffin is not suitable, while the other options serve various beneficial functions related to nail care and hygiene.