Devices, kits and methods described herein include skin treatments with a book-like packaging, applicator and/or tensioning device used to apply a dressing to a subject. The packaging, applicator and/or tensioning device is used to apply and/or maintain a strain in an elastic dressing, and has a first support, a second support, and a primary bending region therebetween, the primary bending region comprising a primary bending axis, with the dressing attached to the first and second supports of the device.
