What is propolis soluble in? I know it is soluble in alcohol, and I think it is also soluble in propylene glycol.
When I tried mixing propolis with propylene glycol, some of it did seem to go into the solution as the propylene glycol got darker, however, a great deal of propolis simply settled to the bottom. It seems that propylene glycol cannot hold too much propolis in solution.
Is propolis soluble in oils (mineral oil, vegetable oils)?
Is propolis soluble in glycerin?