Jules Bernard Montenier (March 23, 1895 – August 20, 1962), of Chicago, Illinois, was an American inventor and a cosmetic chemist. He founded Jules Montenier, Inc., a cosmetics company, and invented Stopette, an antiperspirant that was a longtime sponsor of the CBS game show What's My Line?.[1] Stopette's slogan, repeated at the beginning of the episodes Montenier's company sponsored, was "Poof! There goes perspiration." Montenier was described in the introduction segment of What's My Line? as "the famous cosmetic chemist."