Nail polish has become thicker. Is it because I stored it incorrectly?

Common reasons for the thickening of nail polish include improper storage methods, such as: long-term exposure to air, the bottle cap is not tightened, causing the solvent to volatilize; the storage environment temperature is too high or too low, affecting the consistency and stability of the nail polish; frequent shaking or uneven stirring causes the components to separate or precipitate.
Recommendations:
Tighten the bottle cap in time after use to prevent air from entering; store in a cool and dry place, avoid direct sunlight and high temperature; if the nail polish thickens, try to use a special diluent to slightly adjust it, and it is not recommended to dilute it with nail polish remover.
Proper storage can extend the service life of the nail polish and maintain good texture.