What happens in your skin All BIODERMA products are formulated according to the ecobiology principles, which is at the heart of NAOS approach to respect the skin's ecosystem and preserve its health in a lasting way. The exclusive Lipigenium™ complex, composed of biolipids naturally found in the epidermis, durably reconstructs the skin barrier by biologically stimulating the synthesis of lipids and proteins that make up the intercorneocyte cement. The anti-pruritus dermatological agent PEA rapidly relieves itching and reduces the urge to scratch. The Skin Barrier Therapy™ patent prevents the adhesion of bacteria that cause irritation on even the driest skin.