Several scientific studies have proved with in-depth details about the growth of hairs, nails etc. Fingernails grow faster on your most used hand, which depends on whether you are left-handed or right-handed. Also, they grow faster on larger fingers such as second and third starting from the thumb/toe. It is also a fact that a fingernail takes about six months to grow again if you lose it in an injury. In the case of a toenail, it takes about a year and a half.
