Q: Is it permissible as a Muslim to use products/cosmetics, which contain minerals from the Dead Sea?
A: The Dead Sea is where the Punishment of Allah came down upon the nation of Nabi Loot (Alayhis-Salaam). There is spiritual darkness in this area, so Muslims are not allowed to use products made from the sand and material of the Dead Sea.
And Allah Ta’aala knows best
Mufti Siraj Desai