They let you cut down along the edge. Cut straight down, as far as you can, then yank out the piece by the root (yes, ouch). Over time, the nail will stop growing along the edge. I can’t tell you how long it takes, I don’t remember. It wasn’t that long, I did it decades ago. It’s a permanent solution.
I would highly recommend having it done professionally. It is a permanent change, and you don’t want to have it grow back incorrectly like this commenter
Get a pair of these.
They let you cut down along the edge. Cut straight down, as far as you can, then yank out the piece by the root (yes, ouch). Over time, the nail will stop growing along the edge. I can’t tell you how long it takes, I don’t remember. It wasn’t that long, I did it decades ago. It’s a permanent solution.
Do those have a special name? I wanna try
I would highly recommend having it done professionally. It is a permanent change, and you don’t want to have it grow back incorrectly like this commenter