Every home has mixed dish soap with water to make soap bubbles. And every home has been frustrated by tiny bubbles that pop instantly. The difference between that and the giant bubbles you see in parks comes down to one ingredient and one night of rest.
The recipe that works
Ingredients: 6 cups of water (filtered, or boiled and cooled), 1/2 cup dish soap (concentrated clear ones work best), 1/2 cup cornstarch, 1 tablespoon baking powder and 1 tablespoon liquid glycerin (pharmacy) or, if you can't find it, 2 tablespoons corn syrup or honey.
Method: dissolve the cornstarch in the water, stirring well until there are no lumps. Add the baking powder, the glycerin and finally the soap, stirring slowly so you don't make foam (foam is the enemy of bubbles). Let it rest at least 1 hour, overnight if you can. The rest is what gives elasticity.
Why each ingredient matters
- Dish soap: breaks the water's tension and forms the film.
- Glycerin (or honey): holds water in the film and delays evaporation. It's what makes the bubble last instead of popping in a second.
- Cornstarch: thickens and makes the bubble «heavy», which is what allows big bubbles.
- Resting: the molecules settle. Fresh solution bubbles pop; rested solution bubbles float.
The wand for giant bubbles
Unbend a wire hanger into a circle, or tie two sticks with thick string in a triangle shape (the soaked string is what carries the solution). Dip it fully, lift slowly and don't blow: walk backwards or let the wind do the work. Bubbles as big as the child come out on the first try.
Bubbles in your hand (without popping)
Wet your hand in the solution before touching a bubble. Bubbles only pop on what's dry. A wet wool glove becomes a «bubble catcher» and kids are amazed.
Science you can explain
A bubble is always round because the film looks for the smallest possible area for the air inside, and the sphere is the shape that does that. The colors you see are light reflecting off the two faces of the film, which is thinner than a hair. Two sentences that make any six-year-old feel like a scientist.
Bubble day, calm afternoon
Bubbles are a running-and-shouting game. Afterwards comes the wind-down time, and coloring is the perfect pair: paint online for free or open the Dogavios coloring book, starring Pigúiça the husky with a blank back on every page. 🫧
