Recently, I dedicated an entire evening to my fingernails. I drove to Target to buy supplies, then headed home for a three-hour ordeal. I filed then soaked my grown-out dip-powder manicure in acetone.

Customer Sara Carruth gets her nails painted during her second visit to Clockwork's robot manicurist at Medallion Center Target in Dallas. Shafkat Anowar / Staff Photographer A robot that can paint ...

A fully autonomous nail polish costs significantly less than going to a salon. Correspondent Stella Tannenbaum nails down how it works. During a recent lunch break, a human resources employee popped ...