Spare a spoonful of cooking oil, and then spread it evenly on the label (fragile labels will lose their viscosity under the action of oil). After 3~5 minutes, you can tear it slowly from the corner of the label directly by hand, so as not to leave traces of the label.
Step 2: Dilemma
Soak the towel with hot water first, then wipe it repeatedly at the sticky mark, then dip the towel with soap and wipe it repeatedly at the mark, and finally wipe the soap foam with a clean warm and wet towel.
Step 3: hair dryer
For the adhesive on plastic products, you can use the hot gear of the hair dryer to blow the adhesive hot, and then slowly tear it off. Dry the label with the hot air of the hair dryer, but keep a certain distance, not too close, and don't blow dry for too long. When touching the label with your hands is a little hot, try lifting it from the corner of the label with your nails or sharp tweezers. Because glue will become sticky when heated and tear better than when it is dry. But it doesn't change from glue to water after heating, and the viscosity is still there. You shouldn't tear it too fast and too hard. You must be careful and patient. It is best to "pull" the surface at a 45-degree angle with the original adhesive surface, rather than yanking and tearing it. As long as you are patient, the label can be torn off intact, leaving no trace of offset printing on the box.