CCC 1241

The anointing with sacred chrism, perfumed oil consecrated by the bishop, signifies the gift of the Holy Spirit to the newly baptized, who has become a Christian, that is, one "anointed" by the Holy Spirit, incorporated into Christ who is anointed priest, prophet, and king. Cf. RBC — Rite of Baptism for Children.

Read the full chapter 1. The Sacraments of Christian Initiation ¶1212–1419