The script was based on a play by director Laura Maria Isabel Ruiz Ocadiz. Only one stage presentation (with different actors) was required for her to realize she had to make a film instead.
Florencia's bedroom had a huge window that made the temperature rise up to 30 °C. It was decided for the character to wear a bikini during the scenes in that room. Bernardo Vega had to wear a suit instead. Real sweat can be seen on Alexis Cárdenas' face when she uses the lighter to burn her lipstick.
Actor Huichiton Hernández did not have any previous experience and felt uncomfortable in front of the camera. The director resorted to shoot his shadow instead, while Hernández said his lines. It proved very effective.
The director intentionally kept the contents of the stuffed dog's recipient secret from the cast. When Alexis Cárdenas opens the lid, dropping the powder on the floor, her gasp is authentic. Subsequently, Katia Castarrossi storms into the scene and catches her "daughter" in the act; something else Cárdenas was not made aware of having been planned.
Actress Martha Parada had just arrived from her hometown in El Salvador to live in Mexico when she was cast for the character of Elvira.