Virbac Allerderm Spot On is a user-friendly solution that can be applied directly to the affected skin. It promotes recovery of the skin barrier in dogs and cats with skin conditions. The lipid complex is similar in composition and structure to the lipids in the skin barrier. Allerderm Spot On works with skin cells to create new lipid layers. This contributes to the recovery of the lipid layers in the epidermis, which together with the outer layer of skin cells forms the skin barrier.