Review (1/5): Came off after one day
They are painted in both sides. The underside is silver. I glued these on, but they popped off within a day. They were essentially glued to the silver paint, which stayed stuck to the glue on my nails after the nail itself popped off. I use false nails like this all the time and can get a few weeks of wear out of them... But they aren't usually coated on the underside, too.