LAVA LAMPS WITH SALT
WHAT DO YOU NEED?
⭐️ 1 plastic bottle ⭐️ Water ⭐️ Food coloring ⭐️ Oil ⭐️ Salt
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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.