Ive been suffering from cold sores since I can remember. I usually get 1-3 a year but the last 2 have been horrible.. taking up the whole lower half of my chin. The last outbreak I desperately looked online for some type of help and stumbled upon this stuff. I ordered it and it arrived just in time for me to get another cold sore. I applied it right away 3-5x a day and it never even emerged.. I am in awe!!!