To install Perfect Locks tape-in extensions, simply remove the backing from the weft and apply to the desired area. To create the sandwich technique, lift the tape-in extensions and your client's hair upwards, and place the second weft to the other side. Follow this same process when creating a single panel installation using single-sided tape tabs. Then seal your tape-in installation using your Perfect Locks Tape Pliers. Reinstalling our tape-in hair is easy when using our double-sided replacement tape tabs and adhesive remover.