Critic-Aid Anorectal Skin Paste is a zinc oxide skin barrier paste which conditions sensitive, inflamed and denuded skin caused by caustic diarrhea or enzymatic drainage. Critic-Aid Anorectal Skin Paste protects or treats serious skin breakdown. Critic-Aid Anorectal Skin Paste adheres to wet, weepy skin, protecting it from further trauma. The thick, rich paste is easy to apply. For severe incontinence.