A black line on the nail could be normal ... Melanonychia is characterized by black or brown discoloration of the nail plate.

But these brown or black coloured stripes on the nails can prove fatal. It is also noteworthy that not all dark streaks on the nails are skin cancer, but if it looks soft and the line is light ...

Kara Jillian Brown is the Beauty Editor of InStyle ... "As a result, a distinctive line or lines on the nail resembles the shape and look of a cat eye," says Haye. Get a nail look as mysterious ...