Which of the following products cannot be used in manicuring or pedicuring?

Methyl methacrylate (MMA) is a substance that is largely restricted in the nail care industry due to safety and health concerns. It is known to cause allergic reactions and has been associated with various adverse effects when used on the nails. The use of MMA in manicuring or pedicuring can lead to issues such as nail damage and skin irritation. For these reasons, many regulatory bodies and health organizations have deemed it unsuitable for use in professional nail services.

In contrast, dip powders, gel polishes, and water-based topcoats are widely accepted products used in manicuring and pedicuring. These alternatives are formulated to be safe for cosmetic use, providing diverse options for nail enhancement without the detrimental effects associated with MMA.