Hello. Thank you for visiting our store, we buy things in a licensed pharmacy in the European Union. Silicea Cold Sore Gel, containing pure silicon mineral gel, reduces the symptoms of irritation in just one hour. The gel acts on the liquid in the rash, binding it. The gel is easy to dose and remains in place for a long time. By binding the secretion of the herpes virus, the gel promotes the gradual disappearance of the bubbles, thereby stopping the further spread of the virus. Numbness, itching and burning disappear. The healing process is accelerated. Pure silica mineral gel is very well tolerated.