[3] Born in Mexico City, he is the son of actress and singer Verónica Castro and comedian Manuel "El Loco" Valdés.
As a baby, he made his acting debut with his aunt in the telenovela named El derecho de nacer.
In 1984, Castro made his first appearance on TV as a singer in the Televisa's child contest Juguemos a Cantar, but he did not qualify for the finals because of his young age.
His song "Nunca Voy a Olvidarte" ("I Will Never Forget You") became his first number-one hit on the Hot Latin Tracks chart in 1993 and helped start his career.
In 1995, he was part of the compilation album Boleros: Por Amor y Desamor written and produced by Jorge Avendaño, recording "Vuélveme a Querer", which hit No.
2 on the Hot Latin Tracks (held off by Enrique Iglesias' debut single Si Tú Te Vas).
In 1996, Cristian released El Deseo De Oir Tu Voz (The Wish to Hear Your Voice) which featured hits such as "Morelia", "Amor", "Amarte a Ti", and the title track.
[5] Cristian has also done opening themes for telenovelas such as Morelia (1994), Ángela (1998) and Mujer De Madera (Woman of Wood) (2004).
Following the album's success, Castro sang duets with Olga Tañón, Grupo Límite, and José Alfredo Jiménez.
In 1999 he released Mi Vida Sin Tu Amor, which had four singles in the top ten of the Billboard Hot Latin Tracks chart.
[11] The album features collaborations by several performers, including Reik, Ha*Ash, Leonel García and Verónica Castro.