This treatment is a concoction all my own after years of fighting the fever blister battle.  This recipe ingrient list include such goodies as Coconut oil, Grapeseed oil,Bees wax, Lemonbalm extract, Zinc, Shea Butter and Peppermint Essential Oil. 
Lemon balm research has shown that lemon balm extract can help cold sores heal.
Zinc is used in many ointments for drying and healing sores.
Peppermint soothes and cools as it aids the healing process.