Revealing mistake: When the gang tries the growth formula in the theatre, they quickly grow out of all their clothes until they are naked. But the scrunchy in Jean's pony tail is still in place and shows no signs of being stretched, even if the pony tail now is 20 times bigger.

Village of the Giants (1965)
Ending / spoiler
Directed by: Bert I. Gordon
Starring: Ron Howard, Beau Bridges, Tommy Kirk, Joe Turkel, Johnny Crawford, Joy Harmon
Genius (Ron Howard) invents a substance which gives off a fume, that when breathed, makes whatever is enlarged go back to normal size. He rides in his bicycle to where the giant rebel teenagers are, they breath the fumes and they shrink back to normal. The rebel teenagers leave town and go back to their busted car (the one from the beginning of the movie) and a group of dwarfs passing by ask: "Is this the way to the town with the goo that makes you grow bigger?"
Alex




