At the Cannes Lions festival in June, Unilever’s CMCO Keith Weed demanded urgent action to rebuild consumer trust before, like an ephemeral puff of smoke, it’s gone forever.

Unilever’s focus is on retaining trust amidst the rapid rise of influencer marketing and the concomitant issues of transparency, integrity and measurement. Now brand marketers everywhere are sharing the FMCG giant’s concerns and seeking answers. Already highly invested in investor...