Stay clear of using any additives with your rosin. It's all garbage and so not necessary.
Why don't you consider growing your own plants, organically? It's not rocket science. Anyone can do it whether your location is legal or not. The trick is to keep it small and grow inside a cabinet or tent where you have control over temperature, humidity and the smell during flowering.
I'm on my third grow. One plant at a time in a steel cabinet. I control every aspect of the grow. No pesticides, aquifer water, no nutrients other than what is in the soil mix. The result is pristine, clean flower that I harvest and press myself for use in vape cartridges. It cannot get any better than the way I'm doing it. I lay the whole process, here:
https://www.icmag.com/ic/showthread.php?t=348693