Sea salt has been used for generations for it’s healing properties. Salt is textured and makes a great scrub. These bars are gently exfoliating. Because of it’s ability to draw toxins out of the body it is very healing for the skin. In a soap bar the salt makes a rock hard bar that lasts almost twice as long. 
Over time the bar becomes slick and the lather is lotion like. Sea salt, unlike typical table salt, does not go through a lot of processing so it retains the minerals. The pretty pinks you see in the salt are the minerals. Your skin is able to absorb those minerals providing yet another benefit. If you have never tried salt soap you and your skin are in for a real treat.