Baptism properly speaking. It signifies and actually brings about death to sin and entry into the life of the Most Holy Trinity through configuration to the Paschal mystery of Christ. Baptism is performed in the most expressive way by triple immersion in the baptismal water. However, from ancient times it has also been able to be conferred by pouring water three times over the candidate's head. Catechism of the Catholic Church , page 348, Doubleday, New York, 1995.
Baptism restores supernatural life.
Without that life, man does not have the capacity to enjoy heaven. Religions in America , p.347 Methods of baptism are disputed in the Christian community. Click here for details.