1 tsp. citric acid (find in the canning section of the grocery store)

1 tsp. cornstarch

1 tsp. baby oil

1 tsp. baking soda

food coloring

peppermint extract or essential oil of your choice (can find at craft stores)

1 tsp. epsom salts

special plastic bag or similar

funnel

Procedure:   In a non-metal bowl, mix together the baking soda, citric acid, corn starch and baby oil.  Stir together until well blended.  Next, add 2 drops of food coloring and 1 drop of essential oil.  Finally, add the epsom salts and stir until everything is mixed together.  Place in a baggie or container to save.  Create a colorful label to sell your new product! 

SAFETY NOTE:  This mixture expands so do not place in an airtight container for a few days.

The Science:  Epsom salts are actually made of a compound called magnesium sulfate. This is a chemical that contains magnesium, sulfur and oxygen. Epsom salts are used primarily as bath salts.  People use it to soak their tired feet or for soaking minor sprains and bruises.  Epsom salts are also used as a food supplement for plants.