Care of irritated skin around the mouth for babies and young children Bioderma ABCDerm Péri-oral was developed on the basis of strict ABCDerm safety and tolerance formulation. It is a unique product that directly focuses on the causes of irritation. It actively fights amylase, an enzyme found in saliva and worsens reddening of the skin. At the same time, it acts against itching, restores the skin barrier and has antibacterial effects.