LAVA LAMPS WITH SALT
WHAT DO YOU NEED?
⭐️ 1 plastic bottle ⭐️ Water ⭐️ Food coloring ⭐️ Oil ⭐️ Salt
It works because the salt is heavier than the oil. When you pour the salt, it sinks, bringing a little bit of oil with it. Once the salt disolves, the oil goes back to the surface.