If your product can come into contact with water. No other solution is needed, just water. The water starts from one side of the product and can usually be removed quickly (soaking in water is the easiest to remove). If the product cannot come into contact with water, you can use a hair dryer to heat the adhesive side of the film. When heated to a certain level, the adhesive can be removed by slowly peeling off the film (this method is applicable in many places).