Add flour, salt, coconut oil, & alum powder to a large bowl & stir to combine.
Pour the boiling water over the dry ingredients.
Knead the dough with your hands until the playdough forms.
You can split the dough into four sections & add the desired essential oils & food coloring.
We chose to use the following: yellow food coloring with lemon essential oil, orange food coloring with orange essential oil, green food coloring with lime essential oil, blue food coloring with lavender essential oil. You will only need about 5-10 drops of essential oil per color.
Mix each color until combined.
Store the playdough in an airtight container until ready to use.