How does toenails grow back?

Toenails grow back from the nail matrix, which is located under the base of the nail, just behind the cuticle. As new cells are produced in the matrix, they push older cells forward, resulting in the visible growth of the nail. The process can take several months, with toenails typically growing back slower than fingernails, depending on factors such as age and overall health. If the nail matrix is damaged, it may affect the shape or growth of the new nail.