To be clear after they sit for a month dry alcohol or use dry?
I’m a bit confused by your question. But, if I understand correctly, you’re asking whether you HAVE TO USE ALCOHOL if they’ve been sitting around a while and are dried out, or can you just pick up the strops and get to work with them as the are?
The alcohol is essentially an agitator. The chemical make-up of the alcohol itself disturbs the viscosity of the substrate the diamonds are suspended in, making it easier to spread out new compound or revitalize compound already applied. The substrate being the actual colored stuff in the syringe (green, grey, yellow, etc.) You don’t have to use alcohol but it definitely helps to do so… Just spritz some on without putting much thought into it. How it works isn’t really all that important. What’s important is that it does work.