What happened to Helena Rubinstein's sons?

Helena Rubinstein had two sons, Horace and Pierre. Horace Rubinstein went on to become a prominent figure in the family business, playing a significant role in the expansion of the Helena Rubinstein brand. Pierre, on the other hand, pursued a different path and became an artist, though he also had involvement in the family company. Both sons had varied careers and personal lives, contributing to the legacy of their mother in different ways.