Gelaskins are designed to adhere well to devices while providing a removable solution for customization. Generally, when applied correctly and with care, they should not leave any residue upon removal. The materials used in Gelaskins are specifically chosen to minimize undesirable effects on the surface of your device. However, experience may vary depending on factors such as the type of device, the surface material, and the duration of use. It is advisable to follow the application and removal instructions provided by Gelaskins to ensure the best results and to avoid any potential residue. If you are concerned about residue, you may want to test the skin on a small, inconspicuous area of your device first. For the most accurate and detailed information, it is always a good idea to refer to the manufacturer's website. They often provide additional guidelines and customer testimonials that can be helpful.