How to degrease the surface for stickers?

To degrease the surface before applying a sticker, you can use isopropyl alcohol. Soak a cloth or cotton pad in isopropyl alcohol and gently wipe the area where you want to place the sticker. This will help remove grease and dirt, ensuring better adhesion for the sticker.
You can also use acetone or methylated spirits for this purpose. Of course, always ensure it won’t damage the surface by first testing on a small, inconspicuous area.