Arkopharma Herpotherm Neo Heating pen Treatment of Herpes Labialis & Cold sores medical device Herpotherm® is a patented medical device for the local treatment of the symptoms of cold sores (burning, tingling, itching or tension). EASY TO USE: Thanks to its rapid application, Herpotherm® can completely stop the formation of cold sores. Used after the rash, it can reduce its development or speed up healing. WITHOUT CHEMISTRY - Without the need for creams, the electronic cold sore treatment pen works exclusively by concentrating a flow of heat, without any chemical substances. It is also suitable for fever blisters during pregnancy, for allergy sufferers and for children. Treats fever blisters discreetly, without the need for creams, ointments or patches. DERMATOLOGICALLY TESTED - patented medical device - made in Germany - battery included.