Why is Roman Catholic confirmation not repeated after a valid ceremony?

In Roman Catholic theology, the sacrament of confirmation is not repeated because it is believed to confer an indelible spiritual quality—often described as a "character"—upon the soul of the recipient.12

This concept of an indelible mark signifies that the sacrament has permanently sealed the individual as a member of the church and as one who has received the gifts of the Holy Spirit. Because this spiritual transformation is considered permanent and unique, the rite cannot be performed more than once, provided it was validly administered in the first instance. This teaching aligns with the broader Catholic understanding of certain sacraments, such as baptism and holy orders, which are similarly viewed as bestowing an indelible character that precludes their repetition.123