Blessing of the Brown Scapular

If you want to have your Brown Scapulars blessed, make sure to ask your priest (and not an Extraordinary Minister of Holy Communion) to bless the scapulars using the formula below which is the recommended and official blessing.  The one below is the shorter form.  You can have this printed and shown to the reverend father.
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BLESSING AND IMPOSITION WITH THE SCAPULAR OF OUR LADY OF MOUNT CARMEL
There is a decree issued by Pope Paul V in 1613 stating the importance of wearing this scapular:  "It is permitted to preach that the Blessed Virgin will help by her continued assistance and her merits, particularly on Saturdays, the souls of the members of the Scapular Confraternity who have died in the grace of God, if in life they had worn the scapular,
observed chastity according with their state of life, and recited the Office of the Blessed Virgin Mary."

The imposition is done with a scapular of wool. Afterwards, a scapular medal could be worn. The requirements of this devotion are:

To receive the imposition of the scapular and to wear it habitually. To guard one's chastity. To pray daily the Little Office of the Blessed Virgin. It could be substituted by praying three Hail Marys; or seven Our Fathers with Hail Mary and Glory Be; or the
Divine Office.

[The person who is to receive the scapular kneels, and the priest, vested in surplice and white stole, says:]

V. Lord, show us your kindness and mercy.
R. AND GRANT US YOUR SALVATION.
V. Lord, hear my prayer.
R. AND LET MY CRY COME UNTO YOU.
V. The Lord be with you.
R. AND WITH YOUR SPIRIT.

Let us pray:

O Lord Jesus Christ, Savior of mankind, by your right hand sanctify this scapular, which your servant will devotedly wear for the love of you and of your mother, the Blessed Virgin Mary of Mount Carmel. By her intercession, may he (she) be protected from the wickedness of the enemy and persevere in your grace until death. You who live and reign for ever and ever.

R. AMEN.

[The priest then sprinkles the scapular with holy water and imposes it upon the person (or upon each person), saying:]

RECEIVE THIS BLESSED SCAPULAR AND ASK THE MOST HOLY VIRGIN THAT, BY
HER MERITS, IT MAY BE WORN WITH NO STAIN OF SIN AND MAY PROTECT YOU
FROM ALL HARM AND BRING YOU INTO EVERLASTING LIFE.

R. AMEN.

[After this the priest adds:]

BY THE POWER GRANTED TO ME, I ADMIT YOU TO A SHARE IN ALL THE
SPIRITUAL WORKS PERFORMED WITH THE MERCIFUL HELP OF JESUS CHRIST BY
THE RELIGIOUS OF MOUNT CARMEL. IN THE NAME OF THE FATHER, + AND OF
THE SON, + AND OF THE HOLY + SPIRIT.

R. AMEN.

MAY ALMIGHTY GOD, CREATOR OF HEAVEN AND EARTH, BLESS YOU, WHOM
HE HAS BEEN PLEASED TO RECEIVE INTO THE CONFRATERNITY OF THE
BLESSED VIRGIN MARY OF MOUNT CARMEL. WE BEG HER TO CRUSH THE HEAD
OF THE ANCIENT SERPENT IN THE HOUR OF YOUR DEATH AND TO OBTAIN FOR
YOU THE PALM AND THE CROWN OF YOUR EVERLASTING INHERITANCE.
THROUGH CHRIST OUR LORD.

R. AMEN.