The Atopivet® Skin Care Collar contains a skin barrier lipid impregnated throughout the collar that helps maintain a healthy skin barrier for up to 2 months An easy-to-use collar to help maintain a healthy skin barrier by hydrating and nourishing the skin for up to two months. Small collar has breakaway system for quick release. Can be worn while swimming Biosfeen® is a unique sphingolipid extract that contains ceramides and a high sphingomyelin content, a precursor of ceramides. Contains: Sphingolipids (Biosfeen) 2.5%, Lavender fragrance 1.5%