For Adults:
Combine 1/2-1 cup epsom salts with 4-20 drops Essential Oil (I like 1-3 drops per ounce of salt) for a large, full bath
For Children:
Combine 1/4 cup epsom salts with 1-3 drops Essential Oil for a small bath
There are lots of variations and additives you can use to embellish your bath and lots of EO's to choose from. You could even use magnesium flakes instead of epsom salts! Both are a magnesium base.
Add up to equal parts baking soda to the epsom salts for a detox bath
Add 1-2 tsp carrier oil per 1/2 cup epsom salts for a silky, moisturizing bath
Add 1-2 tsp dried herbs per 1/2 cup epsom salts for aroma (and they are pretty in the jar!)
Add 1-2 tbsp citric acid per 1/2 cup epsom salts for fizz
Mix and match from the above, or use them all!
A few words of caution when choosing oils for your bath: Some oils are hot and can cause discomfort when used topically. Always use a carrier oil if you experience topical discomfort! Oil and water don't mix and rinsing with water will do you no good! In addition, peppermint has a remarkable cooling sensation that may not be enjoyable all over you in the bath! Finally, citrus oils can cause skin sensitivity in the sun when used topically. Use caution if you bathe in a citrus oil before going in the sun and cover up!
So go find a magazine or a good book, and get that tub filling! Get your oils (here!) and salts out for a good soak!