1/2 cup light oil (sunflower, canola, or almond)

3-6 essential oil

1 cup baking soda

1 cup citric acid

3/4 cup cornstarch

4 drops of food coloring (optional)

1 muffin or ice-cube tray

Mix the oils and set aside.  Combine all dry ingredients then stir in oil mixture until it forms a crumbly dough.  If you’re using food coloring knead it in now.  Pack the mixture into the molds and let set overnight.  Unmold the next day and let air-dry.  Use anytime by dropping one lavender bath bomb into a bathtub of warm water.

Keeps indefinitely if stored in a cool dry place.