Do the cosmetics and skin care products produced from dead sea really work and that much different from others?

No.: It needs scientific evidence to support the cliam, which does not exist.

Only if you believe : The placebo effect occurs when the power of suggestion modfies our belief system so strongly that an effect occurs without true pharmacological activity. In truth there is no demonstrated dead sea product effectiveness.

Sure, and I have : Some miracle water from some (glacier, artesian well, hot spring, lourdes) that will make all of those dead sea products seem like duds! sorry, but products are made up of specific chemical elements, and at their essence they do not differ if they are obtained from another location. As for "trace elements" and the like, well there you may have an argument! and the controversy (and high price) goes.

No difference: This is marketing tool used to sell these products. Given the religious aspects attributed to the dead sea, the manufacturers have used this to sell product. Note also that the amount of actual dead sea salt in these preparations is trivial.