2 Tablespoons citric acid (you can get this at a pharmacy)
2 Tablespoons cornstarch
1/4 cup baking soda
3 Tablespoons coconut oil (or any other emollient oil like almond, avocado or
apricot kernel oil)
1/4 teaspoon fragrance oil
3-6 drops of food coloring (if desired)
Paper candy cups
Place all of the dry ingredients (first 3) into a bowl and mix well.
Place coconut oil into a small glass bowl and add fragrance and food coloring.
Slowly add oil mixture into dry ingredients and mix well. Scoop up small amounts of the mixture and shape into 1" balls.
Let the balls rest on a sheet of waxed paper for about 2 to 3 hours, then place each ball into a candy cup to let dry and harden for 24 to 48 hours.
Store bombs in a closed, air-tight container. To use, drop 1 to 3 bombs into warm bath water.