Check this out....I have a friend who just bought 4 10ml bottles of British Dragon prop. He opened one and tried it and said it burned him up. He said it felt like a horse had kicked him. He told me to try it if I wanted( I am already using QV) so I did. Didn't feel a thing. He gave me the 3 unopened vials for nothing. Now the question....Can I use the one that he opened? It was a new needle out of the paper he used to draw and a new one out of the paper to inject.(I know cause I was there)Should be ok right?