INGREDIENTS
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1/2 cup citric acid
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1 cup baking soda
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3/4 cup cornstarch
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1/4 cup organic cane sugar
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About 6 drops food coloring
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10 to 15 drops essential oil(s)
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Special equipment: 2-ounce travel-size spray bottle, plastic pipette, silicone ice-cube tray, storage jars