These are the best press on nails on the market. Nails 💅🏻 can stay on for up to 3 weeks. I suggest filing top of nails first so there are no ridges or glue and putting 1 layer of glue on your nail and 2 layers on the fake nail then quickly apply. The box has back up nails in case one falls off so you can quickly fix it. I am selling this brand new box with an open back up box so you can wear these nails up to 5 times depending on your nails being close to average size.