Fast and Easy Way to Remove Labels From Glass Jars How to Remove the Labels 1. Boil water in a tea kettle. 2. Carefully fill the jars with the water. Only fill the jar to the top of the label. Do not fill it to the top of the jar so that you can still handle the jar. 3. Let it sit for about 3 - 5 minutes 4. The hot water will activate the glue and you can begin peeling back the sticker.