Here's a breakdown:
* 1 year: This is the recommended maximum shelf life for most nail polishes. After this point, the polish may start to thicken, change color, or become clumpy.
* 2 years: If stored properly, some polishes may still be usable after two years. However, it's best to be cautious and toss any polish that shows signs of spoilage.
Factors that affect nail polish longevity:
* Storage: Keep polish in a cool, dark place, away from direct sunlight and heat. This will help to prevent it from drying out or becoming thick.
* Frequency of use: Polishes that are used frequently tend to last longer than those that sit unused for extended periods.
* Type of polish: Gel polishes typically have a longer shelf life than traditional nail polish.
Signs that your nail polish is bad:
* Thicker consistency: The polish becomes difficult to apply smoothly and may leave streaks.
* Color changes: The color may fade or become dull.
* Clumpy texture: The polish may separate or develop clumps.
* Unpleasant odor: The polish may develop a strong, unpleasant odor.
Tip: If you notice any of these signs, it's best to discard the polish and replace it with a fresh bottle.