How to use the product? 1.Wipe off any dust on the wall for a clean surface. 2.Peel off the adhesive cover from the back of the hook. 3.Stick the hook on the wall and press firmly for 30 seconds. 4.For heavy objects, let the hook sit on the wall for 24 hours prior to use. 5.Since we use a strong adhesive to ensure your hooks stay mounted over time, there is some risk of damage to the wall depending on the surface. Do not use on wallpaper and use carefully on drywall and painted walls. Other suitable surfaces include finished wood, tile, acrylic, metal, glass, and marble. How to remove the hook? 1.It's important to peel very slowly. It should take at least 1 min to peel off the hook. 2.We recommend first heating the hook/adhesive with a hairdryer. Then use a sharp object to poke the adhesive while peeling slowly from the top. 3.It may take a few cycles of heating and peeling to fully remove the hook safely. 4.The adhesive is not designed or intended to be reused. It will lose its strength on subsequent use.