It's probably a lost cause... you could try a bit of 99% alcohol.
What just a few drops of alcohol? How old do the normally last then once opened?
Start with a couple of drops... it's a solvent, it may work, it may not.
I had one for months and months. They don't dry out if they are tightly sealed.
Is there anyway to get this stuff out of a brush!
Thanks...using alcohol seemed to the job.
In regards to cleaning the base, I plan to use c-22 / alcohol and cotton wool. Do I need to use cotton wool to remove the adhesive before applying the c-22 onto the base?
And then rinse of the c-22. I think then the salon applies shampoo on the base aswell to get rid of the remaining residue...does that sound about right?