Science, Tech, Math › Science How To Make Colorful Soap Bubbles Share Flipboard Email Print Ben Miners / Getty Images Science Chemistry Activities for Kids Basics Chemical Laws Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated April 27, 2018 Were you one of those kids who tried to add food coloring to ordinary bubble solution to make colored bubbles? Food coloring won't give you bright bubbles, and even if it did, they would cause stains. Here's a recipe for pink or blue colored bubbles, based on disappearing ink, so the bubbles won't stain surfaces when they land. Safety First Please don't drink the bubble solution! Unused bubble solution may be stored for later in a sealed container or disposed of by pouring it down the drain.These are bubbles intended for 'blowing bubbles', not for bathing.Sodium hydroxide is a strong base. Avoid direct contact with this ingredient. If you do get some on your hands, rinse them immediately with water. Ingredients Liquid dishwashing detergent (or another detergent)Water or commercial bubble solutionSodium hydroxidePhenolphthaleinThymolphthaleinClub soda (optional) Here's How If you are making your own bubble solution, mix the detergent and water.Add the sodium hydroxide and indicator to the bubble solution. You want enough indicator so that the bubbles will be deeply colored. For each liter of bubble solution (4 cups), this is about 1-1/2 to 2 teaspoons of phenolphthalein (red) or thymolphthalein (blue).Add sodium hydroxide until you get the indicator to change from colorless to colored (about half a teaspoon should do the trick). A little more sodium hydroxide will result in a bubble that keeps its color longer. If you add too much, the color of the bubble won't disappear when exposed to air or rubbed, though you can still react it with club soda.You may find it necessary to dissolve the indicator in a small amount of alcohol before mixing it with the bubble solution. You can use pre-made indicator solution, adding the sodium hydroxide to the indicator rather than diluting with water.You've essentially made disappearing ink bubbles. When the bubble lands, you can make the color vanish by either rubbing the spot (reacting the liquid with air) or by adding a little club soda. Fun!If you have disappearing ink, you could mix it with bubble solution to make disappearing ink bubbles.