During 'Goliyon Ki Raasleela Ram-Leela' (2013), he grew his tresses and sported a handle-bar moustache.
In his upcoming film 'Bajirao Mastani', he has shaved his head. For continuity's sake he has to maintain his look.
However, the ad folk are apparently not too pleased with this as it means either they have to wait for his hair to grow back, or make do without him.