What is the primary purpose of nail strengtheners?

The primary purpose of nail strengtheners is to fortify weak or thin nails. These products contain specific ingredients designed to strengthen the structure of the nails, making them less prone to breaking, chipping, or splitting. People with brittle or damaged nails often use strengtheners to enhance the durability and resilience of their nails.

While other options may address different aspects of nail care, they do not capture the main function of strengtheners. For instance, adding shine to the nails pertains to aesthetic enhancement rather than strengthening. Promoting nail growth and preventing nail polish from chipping are also important factors in nail care, but they are not the primary goal of nail strengtheners. Therefore, option B accurately reflects the main purpose of these products as focused on improving the integrity of the nail itself.