[MartyS]

If it's months old rubbing with a Qtip soaked in alcohol would take forever, either soak it in rubbing (isopropyl) alcohol or wet a paper towel and set it on the paint, wrap saran wrap around it to keep the alcohol from evaporating.

I recover old acrylic paint bottles by soaking in soapy water for a few days, softens it up no matter how old, so it's just a matter of time and if you want the entire thing cleaned of paint.

 

[MartyS]

An hour wetting it with rubbing alcohol didn't do anything?

You are sure it's acrylic?

And the alcohol, sometimes they sell ethyl alcohol in the same looking bottle, that won't work as well as isopropyl.