Apart from the funny naming and the ridiculously small quantity, it's a product that may cause some skepticism. But after trying on my guitars (including a yamaha nylon guitar), the results doesn't really feel like placebo. 3rd strings seems to be more acquiesced, and good overall tune after bends and "normal" use of tremolo.
And after that, trying to search for the limits and going WAY past where I usually go on bends and tremolo on my PRS SE guitars, yes, I noticed a difference in tuning. But then, WAY smaller than I had without using the lubricant.
So yes, I do recommend the product and will keep using it on all my guitars.