Board of a cosmetics company? (5)

I believe the answer is:

emery

(Other definitions for emery that I've seen before include "Abrasive powder" , "Hard, grey-black mineral used as 11 down" , "Abrasive material" , "Rock used as abrasive" , "Hard grey-black mineral used as an abrasive" .)

I've seen this clue in The New York Times.

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