I make my own bath salts. I buy epsom salts in bulk from the bulk food store, it usually costs around .40/lb. I add a couple drops of essential oil (my fav is lavender) to the salts, and mix them up really well. The salts should be fragrant, but not overpowering. I store them in a tupperware container until I'm ready to use them, then I add about a cup of salts to my bath water.