Soap bubble solutions can break down over time, and they will not produce very many bubbles. You can make bubbles that last longer and that are stronger with the addition of glycerine and the use of distilled water. Distilled water makes the bubbles last longer because it does not contain a large amount of harsh chemicals like fluoride and chlorine. Glycerine helps to preserve the bubbles to keep the solution from breaking down so that you can store the solution and use it in the future to produce strong bubbles.
Add 2 tbsp of glycerine into a clean jar.
Add 4 tbsp of baby shampoo to the glycerine.
Pour in 1 cup of water.
Stir the bubble solution slowly. This will prevent suds from forming in your soap solution.
Dip a bubble wand into the solution and blow.
Place a lid on the bubble solution jar. Store it in a cool and dark environment to make it last longer.
Add 3 to 4 drops of food colouring to the bubbles to make them colourful.