Cymed Microderm Hydrocolloid Skin Barrier Washers, Thin, Pre-Cut, 1" (25mm), 30/Box Washers provide extra protection and support to the skin surrounding the stoma without sacrificing comfort. Naturally extracted from citrus peels, Cymed’s washers are a specially formulated pectin-based hydrocolloid. Washers can provide some absorption and longer wear time for wounds, as well as providing some minor convexity for recessed stomas.