It had an effect on my ears.
I was given a salt scrub for Christmas one year. It said it was from the Dead Sea.
It was just like the regular salt scrub from Bath & Body Works. Salt is salt, and I can't tell Dead Sea from Morton's. The gritty salt exfoliates and cleanses as it slowly dissolves during use. The oil in which it's packed moisturizes.
It worked fine, and left the skin smooth and soft. :)