The actor has been shooting two films back-to-back, but his character does not have facial hair in Kyaa Super Kool Hain Hum.
A source told DNA India: "Tusshar was caught in a dilemma. He didn't know whether to shave his beard or not, because it would have taken time for it to grow back and Shootout At Wadala's schedule would finish.
"Also, sister and producer Ekta Kapoor wanted the look to be real, so shaving was not an option. However, the comic film had a peppy number and his character throughout the film doesn't have a beard.
"So, at the end they came up with a solution of having the song picturised in the '70s look, that finally had Tusshar sporting the beard."
In March, it was reported that Kapoor is going shirtless in the "sex comedy" produced by Sachin Yardi.
The film is reportedly facing cuts from censors because of its bad language and sexual undertones.