A black line on your nail (medically known as melanonychia) causes a streak of dark pigmentation that runs along the nail bed ...

Michelle Tagliamonte, 58, spotted faint black lines on the nail of her her right thumb while getting a manicure in September last year. But when the marks hadn't grown out by her next nail session ...

But the lines were still there. Kennedy News & Media Tagliamonte went to a dermatologist, who told her the “discoloration at the base of my thumb nail ... this black line in my nail was coming ...

Dark purple-blue nail polish is the most intense yet when it comes to following the periwinkle nail trend. Suspended between ...

"The contrast between the dark base and polish creates a beautiful ... "As a result, a distinctive line or lines on the nail resembles the shape and look of a cat eye," says Haye.

"Weather and fashion influence how people get their nails done," says Nyugen. Dark green nails feel appropriate for fall, but you can wear them for any season. "I painted these dark green nails ...

But here's the thing - I am a wear black year-round type of person. Although I do lean towards charcoal gray during the hotter days. And as for my nails? Oh, black nail polish designs. All year round.