In a large bowl, mix together 32 ounces of extra fine Epsom salt and 1 ounce of colloidal oatmeal. Use your hands or a whisk to mix and break up the clumps.
In a separate bowl, add 0.5 ounces of oat oil, 0.5 ounces of Oatmeal Milk and Honey Fragrance Oil, 0.5 ounces of oat extract, and 0.5 ounces of polysorbate 80. Use a spoon to mix together all the ingredients.
Pour the oil mixture into the salt mixture. Use your hands or a large spatula to thoroughly mix.
Add 1 ounce of oatmeal. We used quick oats, but traditional oatmeal works as well.
Spoon the mixture into jars. To use, add several large tablespoons of the salt into a hot bathtub. It can also be used as a scrub. Enjoy.
Recipe by Soap Queen at https://www.soapqueen.com/bath-and-body-tutorials/soothing-oat-bath-salts/