I use an old stiff bristle toothbrush and a little 99% alcohol or C-22 to remove adhesive out of my hair.

Here's a funny story: Shortly after I first started wearing many years ago, I accidentally knocked over a whole bottle of white glue which ran right into my unit which happened to be off my head and on the counter beside the glue.

I had absolutely no idea how I was going to get the huge glob of glue out of the hair... Luckily, I spotted the old toothbrush, found some Goo-Gone under the sink, and put two and two together.

That old toothbrush literally saved the day (and my hairpiece)!!!