Nail polish is composed mostly of volatile components that evaporate when opened each time, when it thickens it is difficult to apply and does not dry properly.
The Thinner has been formulated to restore the ideal consistency of the nail polish so that it can be applied in thin layers (a few drops should be applied from the base every 3-4 seconds).
Before starting the manicure, check the consistency of the nail polish, if it is too thick, add 2 or 3 drops of Thinner and shake well. Let stand for 20 minutes, even overnight before use.