If you heat the lanolin and alcohol much hotter it will mix so well it will never seperate.

I normally bring a big pot of water to a boil. Then I remove it from the heat source. I let it set for a couple of minutes then I put the bottle of alcohol, with the lid loosened, and the bottle of lanolin into the pot of HOT water. I let them set for about 10 minutes until really hot then I pour 1/2 the alcohol in the spray bottle then put hte alcohol back in the pot. Then I add all the HOT lanolin to the spray bottle with the HOT alcohol. I shake vigorously for a minute or so while burping the container every 20-30 seconds. Once completely mixed I add the rest of the HOT alcohol to the spray bottle and shake it again for another minute or so.

I did this and my mixture has never seperated. It has sat on a shelf for a month at a time and still looks the same.