Rules for its use
Though each scapular has its own particular qualifications and usage, the Church has set down certain rules that pertain to all types. A scapular must be in good repair with both bands intact. Multiple scapulae may be worn on the same bands, but the bands must be the color of those prescribed by the scapular with the most preeminence, and that scapular must be foremost with the others behind in order of precedence.
A scapular associated with a confraternity must be invested by an ordained representative of that group. A scapular associated with a mystery or devotion may simply be blessed by a priest and given to the wearer.
To receive the benefits or indulgences granted the scapular generally must be worn constantly. It may be placed aside for a time but, during that period, the wearer does not receive the scapular's benefits. Should the wearer take up the wearing of it again, the benefits are again conferred.
If a scapular becomes damaged to the point where it cannot be in good repair, it must be replaced. However, it is not necessary for the wearer to be reinvested as it is the devotion of the wearer, not the object itself, that confers the benefit of the scapular.