Now on with the review. This in my opinion is a must have device for anyone who suffers from cold sores. I felt like it helped stop the sore, and aided in the healing. If you have a full blown cold sore its going to aid in the healing process. Just don't expect some miracle from a cold sore at it worst. Like I've stated in the past the best way to fight cold sores is to catch them early. Stay healthy, and keep products and remedies close by. The process is painless and I noticed that my blister never actually grew past the point of use. I continued use for several days, and could not deny the results that I had seen. I love my LipZor. Its a great product to have on hand when you need it the most.