What is the primary ingredient in most nail strengtheners?

The primary ingredient in most nail strengtheners is keratin or proteins. Keratin is a fibrous structural protein that makes up the primary component of nails, hair, and skin. Because nails are largely composed of keratin, including it in strengtheners helps in reinforcing the natural structure of the nails, promoting durability and resilience.

When nail strengtheners are formulated with proteins or keratin, they work to fill in and smooth out imperfections and weaknesses in the nail's structure. This can lead to healthier-looking nails that are less prone to breakage and splitting.

Other ingredients like calcium, water, and vitamins can also be beneficial for nail health, but they do not serve as the primary strengthening agent. Calcium is important for overall nail health, but it does not repair or strengthen the nail directly in the same way that keratin does. Water acts as a solvent and helps with the application process but doesn’t contribute directly to strengthening. Vitamins can promote general health but may not specifically target the structural integrity of nails like keratin does. Thus, keratin or proteins are essential for effectively strengthening nails.