Exactly^ I wouldn't rely on that stuff for lucid dreams. I don't know how salvia wound up in the mix, I've done that and it's basically 5 minutes of gooing out. Lucid dreams are weird in the sense that one night you may have one and completely forget about it and never have another. They come and go really spontaneously. Try keeping track of your dreams with a journal. Write what was happening, how it made you feel, what it reminded you of. Even if you don't end up having a lucid dream, 10 years later when you look back at that journal, the forgotten dreams  will completely re-jog your memory. As I write this, I'm beginning to remember dreams that I had months and even years ago. Let me know how those artificially induced dreams go