You could make one I guess. Take an oil from a supercritical extraction (CO2 or liquid N2, or BHO), heat it to decarboxylate the THC so it's active, dissolve it in a small volume of solvent in a little nose spray bottle. You'd have to use a solvent that won't hurt you and is safe to put in a sealed bottle. Ethanol seems like the way to go here. Ether if you can store it in a cold environment like a freezer.
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I'm aware that it's hash oil. It's also the closest thing to pure THC that most people can get, and it is a much more efficient way to extract than using an alcohol. If you start with an alcohol you need to do more than one extraction or wait a long time to get most of the product into solution. Then you would need to evaporate off most of the alcohol to get it concentrated enough to dose with a spray bottle or dropper. A supercritical extraction is fast, efficient and the end product can be dissolved in an appropriate solvent to dose with a dropper or sprayer. I don't think supercritic extractions are hard, grind the weed up with a coffee chopper, put it in something that can handle low temps, pour in solvent carefully, stir it around a little, filter and pour out, let solvent evaporate, walla you have hash oil.That's actually hash oil or honey oil...something a little different
Much better than tincture IMO, this is usually added to the top of a bowl and smoked.
I haven't heard of taking honey oil and dissolving it in ethanol to make and something you can drop on your tongue.
Much easier to do the other way, BHO extraction is a lot of work.
When i made it using BHO, I had a pvc tube, with a hole for the butane in one end and a bunch of holes on the other end for the oil to drip out of. Then I had to heat the oil to get the BHO bubbles to evap out. The leftover product just seemed messy to me. How do i make a thin oil I can actually pour rather than the thick sticky substance that I ended up with. I want to try making something I could put in a vile and pour a few drops out.
Re: alcohol extraction, I got 10g to go into 4 oz of alcohol and about half of that evaped during the process. So it was 10g in 2oz. I'm not an expert but from what I read the exchange takes place once you heat it so no need to do several. The end product was strong but I wouldn't make it again. I favor cold water extraction but I'd like to try making a better oil if you have any advice on getting something with a viscosity like a thick olive oil or a thin honey.