CCC 1297 The consecration of the sacred chrism is an important action that precedes the celebration of Confirmation, but is in a certain way a part of it. It is the bishop who, in the course of the Chrism Mass of Holy Thursday, consecrates the sacred chrism for his whole diocese. In some Eastern Churches this consecration is even reserved to the patriarch:
The liturgy of Antioch expresses the epiclesis for the consecration of the sacred chrism (myron) in this way: “[Father. .. send your Holy Spirit] on us and on this oil which is before us and consecrate it, so that it may be for all who are anointed and marked with it holy myron, priestly myron, royal myron, anointing with gladness, clothing with light, a cloak of salvation, a spiritual gift, the sanctification of souls and bodies, imperishable happiness, the indelible seal, a buckler of faith, and a fearsome helmet against all the works of the adversary.”