 Vidhu Vinod Chopra (qv) requested Amitabh Bachchan (qv) to grow  a real beard for his role in the film. But since Bachchan was  preoccupied with other films and commitments, he instead chose to  wear a false beard. Unfortunately, this caused more problems than  Bachchan expected: he had to sit through two months of "beard  auditions," where he tried on several kinds of beards (Chopra being  a perfectionist, he demanded that the beard be the right length and  shade for the character), and then he experienced serious discomfort  and irritation as the glue that stuck the beard to his face was  restricting his facial movements. When filming was over, he secured  a promise from Chopra that if he makes the Big B wear the beard in  his next movie also, then Chopra too would have to wear one.