Dina Howell, who had been vice president for global media and brand operations at Procter, joined Saatchi & Saatchi X as worldwide chief executive.
The merger saw Uber hand over its branding, operations and data to Didi in exchange for a 20% stake of the company.
Uber agreed instead to hand over its branding, operations and data in exchange for a 20% holding in Didi, which is valued at $35bn.
(Ms. Smith's title at Elle had been senior vice president and chief brand officer. Ms. Welch will now devote her full time to her regular post, vice president for brand operations).
Earlier this month, Ralcorp announced that it was buying the Sara Lee Corporation's North American refrigerated dough business for $545 million, a deal meant to further bolster Ralcorp's private-brand operations.
Martin Inglis, 50, the vice president for Ford brand operations in North America, is the top candidate to replace Mr. Wallace, while Nick Scheele, 57, the chairman of Ford of Europe, will replace Mr. Inglis.
"This has been a great opportunity for us to partner with a leading Korean company in an exciting segment of the cosmetics space and to help support its brand, operations and growth around the world," Ed Han, a managing director at Bain Capital, said in a statement.
They will retain a separate brand, operations as well as a platform.
