Allerderm Spot-on contains skin lipid complex, an exclusive blend  of Ceramides And Fatty Acids similar to those found in normal, healthy feline and canine skin.  Formulated for use in topical skin care for dogs and cats with damaged or compromised skin. It is specially formulated to provide adjunctive therapy for pets with skin disease by combining  ingredients that help restore skin integrity and balance. Restores the protective barrier function of the epidermis resulting in enhanced hydration, less sensitivity and more protection. Initial Dose:One pipette per week for 4 weeks. In severe cases, two to three pipettes per week may be used, up to one per day if necessary. Maintenance Dose:To prevent relapses, and for skin and hair coat health maintenance: one pipette per month.