Power Phaser Roll On contains an especially high concentration of active ingredients to protect the horse against mosquitoes, horse flies, flies, and ticks, with even performance during perspiration. Its gentle formula makes it suitable for horses with sensitive skin, and it is especially beneficial for sensitive areas like the ears and face. Natural fly repelling extracts like Cade/juniper oil, Citriodora Oil, Geranium Oil, and Pennyroyal Oil are included, as is Cedarwood Oil which helps protect against insects while inhibiting hair loss and dandruff.