Fedra Lorente, Aure Sánchez, David Arnaiz and Miguel Hermoso are the only main actors who appear trough the whole series.
Carmen Ruiz left the series to work in Cuestión de sexo.
Ruth Núñez defined the whole experience of the show as "exhausting", because she was leading a daily series and the network forbade her to attend public acts in order to keep the mystery of the show plot (the transformation from ugly to beautiful).