If you ever want to try rebooting your car batteries before calling a towing service, make a solution out of 1 ounce of epsom salt dissolved in warm water, and apply the solution to the battery cell before starting your car. Epsom salt can also be used for making your hair less oily, alleviating bruises, boosting your vegetable garden, and more. Read below for more practical uses for epsom salt around the home and in the garden. For more epsom salt uses, click here.