While you can use unrefined shea butter in this recipe, unrefined shea does have a short shelf-life.  I prefer to use refined shea as it is less prone to going rancid and it does not have an overpowering aroma.

Ingredients:

50g Whipped Shea (whip for 15 mintutes - you may wish to add 1% EO/FO)
300g  Sodium bicarbonate
150g Citric acid
150 Epsom salts

Method:

Combine all the dry ingredients in a bowl then add the whipped shea a little at a time.  Spoon into jars and label.  Add a small amount to the bath