Was a little sceptical at first but am totally sold on this. Having suffered from very aggresive cold sores this has stopped 2 now before even developing. Some people have said it feels too hot and hurts, but the trick is to not press it down on the skin, hold gently on the area of concern. It really does work!

Absolutely fantastic! As long as you use it as soon as you feel a tingle, it won't develop.

I have suffered from this cold sore virus for 40 years. Anyone who has suffered will know exactly how embarrassing and painful they are. Well good news, this product works. I applied it at the start of the tingle and reddening, it stopped the outbreak in its tracks. It works, what a relief. Battery life is short so get a couple of CR2 batteries as spares.

The outbreak was stopped in its tracks. No blisters.

Nothing to dislike. Seems to work well Very handy to carry in a pocket. I felt the tingle of a cold sore developing so used this device every couple of hours during the day. Amazing no cold sore developed. Recommended product and seller.

I have suffered from cold sores for 30 years + and this is the best product I've used.

I bought this device suffering from cold sores since beginning of January back to back. I have been trying anything, the tablets, creams but nothing seems to work well enough. After reading all the online articles and going in several forums, I found this device, and I love it. First of all I don't think it is burning that bad, especially for 3 seconds, it is fine.

My sores usually last 2 weeks until fully healed. With this product at the tingling stage, a sore never appeared.