I got the P-20 in the mail, it was shipped all the way from California so it took a while.
Right now I’m trying it out in a mix I made of an oud attar. I just added 1 drop to see what it would do, then I diluted about a mL to 25-30 percent strength in perfumer’s alcohol. It does seem to help the top notes stay sharper longer, particularly for the rose otto in there, though it also cuts down on the initial blast you can get with a spray fragrance, which IMO is not a bad thing. I will try it out in pheromones later today if I can.