We usually always have a small bottle of this on hand at home. It works amazingly well. Especially in the winter when my husband gets cracked lips and he ends up with a sore on it. The formula is pretty thick and can be a little hard to rub in. Often times you can see it on but it doesn't bother me. It works well with cold sores on the inside of your mouth as well. It doesn't have a taste and most of the time I do not even feel like I put it on. A little really goes a long way, you do not need to apply a whole lot. Just a dab on the infected area. There is one major downside to using the product and I am sure that is the main problem with it in general. The price is outrageous! This may actually be an issue for a lot of people. It really isn't affordable for all people. I would still suggest buying into it because the bottle does last a very long time. I mean its not like we get cold sores every single day. Either way- it is still a good buy and I recommend it to anyone who hasn't yet tried it.