Yes, self-adhesive photo wallpaper can usually be removed again. Non-woven wallpaper cannot be removed without leaving any residue. However, the exact procedure depends on the type of adhesive and the nature of the wall. Some wall murals come with a special adhesive that allows for easy removal without damaging the wall. Other wall murals may require a little more effort to peel off. Always read the manufacturer's instructions and use caution to avoid damage.