In a large mixing bowl combine your corn starch, baking soda and citric acid and mix well.
In a small glass bowl, combine your water, a few drops of purple soap colorant and 5 drops of lemon essential oil and 5 drops of lavender essential oil.
Slowly mix your water (with colorant and oils) into your dry ingredients and mix while pouring.
Place a 1/2 teaspoon of dried lavender in the bottom of one circle halve and then fill that side up with your bath bomb mixture.
Then fill up your second halve with your bath bomb mixture
Press your 2 circle halves together.
Let the molds set overnight.
Place bath bomb in a warm/hot water bath and relax with the fizzing scent of lavender lemon.