1 cup baking soda
1/2 cup citric acid
1/2 cup Epsom salt
1/2 cup cornstarch
2 to 3 teaspoons fragrance oil or essential oil
A few drops of food coloring, optional
Water in a spray bottle
Mix the baking soda, citric acid, Epsom salt, and cornstarch in a bowl
Add fragrance oil and food coloring
Spray in a little water at a time while mixing
Stop when the mixture holds together when squeezed
Pack the mixture into molds
Let it dry for 24 to 48 hours
Remove from molds
Store in an airtight container