Supplies:

• 1 box baking soda
• 1 1/2 cups water
• about 1 1/2 cups of shaving foam
• food coloring drops
• squirt bottles
• white vinegar
• spray bottle

Directions:

1.  Mix together the baking soda and water.
2. Add the shaving foam.
3. Divide the fizzy foam paint into five small cups or dishes (We used Solo cups).
4. Add 7 drops of food coloring per cup (We used the neon food coloring drops).
5. Using a funnel transfer the colored paint to each bottle.
6. Fill a small spray bottle with white vinegar.
7. Head outside!

You want the fizzy foam paint pourable, so if it seems too thick, add a little bit of water to thin it out.

sourced from: https://thetiptoefairy.com/diy-sidewalk-fizzy-foam-paint/?utm_medium=social&utm_source=pinterest&utm_campaign=tailwind_tribes&utm_content=tribes