Cold sores are painful, artless blisters that develop in or or so your mouth, normally on your lips. Once you've had a cold afflictive, it's likely you bequeath have more over the course of your life.

That's because cold sores are caused by a computer virus known as herpes simplex virus computer virus (HS1). Later you get an HSV infection, the virus travels to near steel cells where it can lie dormant for long periods of time.

When triggered, the virus can start replicating again, causing other cold sore.

It can be horny to predict what triggers a fever blister, and they mightiness seem to appear at the worst times.

But research has known some common triggers.

We've partnered with Burt's Bees, known for its lip balms and other lip care products, to explore the triggers of cold sores, and help you prevent and prepare for prospective flare-ups.