The square design is perfectly fit, easy to apply and beautiful natural appearance. Each replacement nail is numbered, so you can easily choose the replacement nail that best fits your nail.This is all you need to do:First, carefully disinfect your hands, especially the nails and dry them well. Then select artificial nails to fit all of your natural nails. If you can't find a perfectly suitable replacement nail, choose a slightly larger nail and select the edges to fit. 3Then apply a thin layer of Depend nail sticker to the entire nail. Be careful not to get a nail on your skin. Now you can apply nail replacement. Press firmly for 5-10 seconds.Make sure that there are no air pockets between the nail and the replacement nail, as this can lead to injury. If an air pocket forms, you should apply the replacement nail again. We recommend that you do not wear replacement nails for more than 10 days. After that, you should allow your nails to breathe before applying alternative nails again.Remove artificial nails; use Depend Nail Remover, never cut or pull out replacement nails.This can damage your natural nails.