I get terrible cold sores and they are very painful. The only thing I have found that heals them and stops the pain immediately is the Aquafina Hydrating Oil. It cools and soothes the sores so that you can bear it until it heals. I LOVE the stuff!
My DH's boss's wife sells Mary Kay and of course I have Mary Kay stuff (brownie points we hope). I have three mini-glosses that look absolutely fabulous and are slightly chocolate flavored and they fit great in my small purse.