A bit about sea salt (from the Mountain Rose Herbs website):

"Sea salt is not as refined as table salt, and it still contains traces of other minerals, including iron, magnesium, calcium, potassium, manganese, zinc and iodine. Sea salt is thought to be healthier and more flavorful than traditional table salt, and many rave about its bright, pure, clean flavor. Sea salt is actually not as 'salty' as table salt, so recipes may have to be adjusted for taste.

There is nothing more soothing, satisfying, and luxurious as a therapeutic soak with sea salt. At one time, high grade sea salts were only available at spas or in expensive bath care products, but now they are more widely available at affordable prices. Our solar dried sea salt is 100% natural, contains no additives, and has a high mineral content. It is for wonderful for softening and rejuvenating the skin, is a great exfoliant for sloughing away dry skin cells, relaxes muscular aches, pains, sunburns, rashes, and irritated skin. Sea salt is a perfect choice for those who wish to make their own bath salts, salt scrubs, therapeutic treatments, and it is also used within bath bombs, bath teas, soapmaking and in deodorant. "

Precautions
Do not use in case of skin infection or external wounds. Consult with a doctor before using if you have any medical conditions, are on medication, or are pregnant.

Sea salt does not contain iodine, which functions in the production of thyroid hormones. Accoeding to Northwestern University, one teaspoon of iodized table salt is enough to meet this dietary requirement. If you are using sea salt in place of table salt, please be sure that you are getting iodine from other sources. Other dietary sources of iodine include seafood (clams, lobster, oysters, sardines and ocean fish), drinking water, and dairy products from feed additives as well as from disinfectants used on dairy farms (not a very healthy source).