Definition & Meaning of "nail hardener"in English

What is a "nail hardener"?

A nail hardener is a specialized nail care product designed to strengthen and fortify weak, brittle, or soft nails. It is formulated with ingredients that promote the development of a stronger and more resilient nail structure. When applied to the nails, the hardener forms a protective layer that helps prevent breakage, splitting, and peeling. It works by enhancing the nail's natural strength and promoting the bonding of the nail layers.