There are three stores selling Dead Sea beauty products at the Ben Yehuda Pedestrian Mall on Jaffa Road in central Jerusalem. A fourth store is at 28 King George Street, several blocks away. Prices at all four are very good.
Salty tip: Israel's large pharmacy chains, like Super-Pharm and Nu-Pharm, carry Ahava and other brands of Dead Sea beauty products. The pharmacies are conveniently located, but prices are somewhat higher.