In a small bottle mix water, 20 drops of essential oils and 4-6 drops of food coloring.
Add mixture to the dry mix VERY slowly. Add a few drops and mix, then add a few more drops and mix again. Do NOT let the mix fizz. Once the mixture is damp all the way through, NOT wet, stop adding any of the water mixture.
The mixture should hold together when squeezed. Pack into your mold as tightly as possible.
Wait a minute or so then release from mold. Leave out on a paper towel or plate to dry over night.