Hi Phil
Acetone is ionic and is therefore soluble in water, the product you buy will be diluted with water anyway.
The more concentrated the more effective, you can buy it on line, ebay etc.
It is never a good idea to pour any solvent on, you may delaminate the backing among other things.
Start by applying with a cotton bud or onto a towell and gently rub in.
Cheers
Doug