How can FRONTLINE® SPOT ON be effective even after bathing my dog?
FRONTLINE® SPOT ON is effective even after bathing from 48 hours after treatment because the fipronil dissolves into lipid-rich structures of the skin and concentrates into the oil (sebaceous) glands of the skin. As the skin oils (sebum) are constantly replenished on the skin, so the fipronil levels on the skin and the hair are replenished.