I make my own bath salts and occasionally give it as "love gifts" to friends. Thought I would share how to do it, so you could.. if you want.. make some too. :)
Mix 3 cups of Epsom Salt, 1 tablespoon of glycerin and a couple of drops of essential oil, such as lavender or eucalyptus.( I mix my own for all different uses.. using several oils and scents together)
You can add a few drops of food coloring if you want to or just leave it plain. Put into a pretty glass jar.
For a soothing bath, place 1/2 to 3/4 cup of this mixture into the hot water.
Relax and enjoy.