Yes, micellar water can expire. Like any other skincare product, micellar water has a shelf life and should be used within a certain period. The expiration date can vary depending on the brand and formulation, so it's important to check the packaging for specific information.

Typically, an unopened bottle of micellar water can last for about two to three years. However, once you open the bottle and expose it to air and potential contaminants, the product's shelf life decreases significantly. Generally, an opened bottle of micellar water can last anywhere from six months to a year, depending on the formulation and storage conditions.

To ensure the longevity and effectiveness of your micellar water, it is important to store it properly. Keep it in a cool, dry place away from direct sunlight and extreme temperatures. Additionally, make sure to close the bottle tightly after each use to minimize exposure to air and contaminants.

If you notice any changes in the appearance, smell, or texture of your micellar water, it's a good indication that it has expired and should be discarded. Using expired micellar water may not provide the desired cleansing and skincare benefits, and it could potentially lead to skin irritation or other adverse effects. Therefore, it's always best to check the expiration date and replace your micellar water when necessary.