Using this replacement adhesive is easy. First, clean the surface of your GoPro ND filter or lens shield where you'll apply the adhesive. Then, carefully place the adhesive on the surface. When you need to remove it, just gently peel it off. It can be reused many times. If the adhesive gets dirty or loses stickiness, wash it under tap water and let it dry before reusing. Make sure to store it in a cool and dry place to keep its quality. And always check if it fits your specific GoPro model (Hero 5/6/7, Hero 8/9, or Session 4/5) before use.