The essential rite of Confirmation is the anointing with Sacred Chrism (oil mixed with balsam and consecrated by the bishop), which is done by the laying on of the hand of the minister who pronounces the sacramental words proper to the rite. In the West this anointing is done on the forehead of the baptized with the words, “Be sealed with the gift of the Holy Spirit”.
The effect of Confirmation is a special outpouring of the Holy Spirit like that of Pentecost. This outpouring impresses on the soul an indelible character and produces a growth in the grace of Baptism. It roots the recipient more deeply in divine sonship, binds him more firmly to Christ and to the Church and reinvigorates the gifts of the Holy Spirit in his soul. It gives a special strength to witness to the Christian faith. (Compendium of the Catechism of the Catholic Church, 267 – 268) See more.