Acetone is acidic, so you will need a container it will not eat through. Avoid plastic. Use a glass cup instead. A shot glass would work. Just make sure to wash it thoroughly before drinking out of it again. [2] X Research source
If there are some clumps of nail polish that will not come off, use a paper towel to remove them.
Add one drop, close the bottle tightly, and roll it between your hands. See if the nail polish is as thin as you want. If it’s not, add another drop of nail polish thinner and repeat. Keep repeating this process until the nail polish is thin and wet like new.
Roll the bottle back and forth between the palms of your hands. This may work to loosen up the polish. If this method does not work, you may have to try another means of loosening your nail polish.
Use an eyedropper to add one drop of polish in at the time, swishing the bottle in between. Add as many drops as you need to adequately loosen up your nail polish.
