Ingredients For Citrus Bath Salts 2 Cups Epsom Salts 1 Cup Baking Soda Fresh Grated Zest from 1 Orange or Lemon 20 drops of essential oil. Use Lemon, Orange, or Citrus Bliss essential oil. I combined lemon and citrus bliss for this recipe. You can do whatever you prefer. Glass bowl, metal spoon, and large bath salt jar (available at Walmart for $2.97) or use any clear glass jar you like.