Let the Balls Dry
The bath bombs need to harden before they can be used. Leave them
to dry overnight at room
temperature.
Add the Water
Add water half a teaspoon at a time, stirring the mixture in after
each addition. Keep adding water until the mixture becomes the
texture of damp sand and will hold in a tight clump.
Add the Citric Acid
Add the citric acid and thoroughly combine until well-mixed.
Mold the Ball
Pack the two sides of your bath bomb mold full of the mixture.
Pack it tightly and slightly overfill. Press the two sides of the mold
together as tightly as you can. Gently pull off one side of the mold,
flip the ball over into your hand, and pull off the other side of the
mold.
Tip: Handle the bath bomb very gently, as the mixture is still
slightly damp and not yet hardened.
Smooth the Sides
Use the back of the spoon to smooth the seam of the ball where
the molds met.
More detailed instructions may be found at:
https://www.thesprucecrafts.com/basic-bath-bomb-recipe-516651
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