Nu-Hope Carbo Zinc - Peristomal Skin Barrier Paste protects peristomal skin from irritating stomal discharge. Nu-Hope Carbo Zinc contains zinc oxide and vitamins A, D and E. This skin barrier cream protects and soothes skin at the same time. This is a peristomal paste which means it can be used with an ileostomy, colostomy, and/or an urostomy.