Once opened, nail polish typically lasts for 1-2 years if stored and cared for properly.
Here's a breakdown of factors that affect its lifespan:
* Storage: Nail polish should be stored in a cool, dark place away from direct sunlight and heat. Exposure to heat and light can cause the solvents in the polish to evaporate and thicken.
* Frequency of Use: Opening the bottle frequently exposes the polish to air, which can also cause it to thicken and dry out.
* Proper Closing: Make sure to tightly close the bottle after each use to prevent air from entering. Clean the neck of the bottle with nail polish remover to prevent the cap from sticking.
* Thinning: You can use a nail polish thinner (specifically designed for nail polish) to revive thickened polish. Avoid using acetone, as it can damage the polish.
* Signs of Spoiling: If your nail polish becomes thick, stringy, separates, or changes color, it's likely spoiled and should be discarded.