In France, the Mennen branding is owned by L'Oréal through its Mennen-LASCAD subsidiary, for a line of men's grooming products.

Lady Speed Stick was a foray into the women's market, and was a huge success due to its shape, which fit a woman's hand, and fragrances.

Gerhard's grandson, G. Mennen Williams, served as Governor of Michigan 1949–1961 and as Assistant Secretary of State for African Affairs under Presidents John F. Kennedy and Lyndon B. Johnson 1961–1966.

The former headquarters and manufacturing plant in Morris Township, New Jersey, was demolished in spring 2018 and replaced with housing developments and retail space.

At Harpers Ferry National Historical Park, there is a giant advertisement painted on the rock face of Maryland Heights.