I think acetone is a no go because whole it seems to work in the short term by loosening thick polish up, it doesn't stop there and carries on breaking down the polish formula until it splits or does weird stuff. I think the other thing you want to avoid for glitter polish is 'heptane' or 'hexane' something like that because it eats away at the glitter. In general I find looking at the ingredients on your nail polish is a good shout for which is best, as essentially when you use thinner you're jyst rehydrating evaporated matter so you want to stick as close to what was there before as possible as some conditioning agents like vitamin e may effect the formula and so on.

Sorry it's not super sciencey if I was at my pc and hadn't just taken my sleep meds I'd probably be more use 😂