* Degradation of Active Ingredients: The active ingredients in the mask (vitamins, antioxidants, etc.) will likely have degraded and lost their effectiveness. You won't get the intended benefits.
* Risk of Bacterial Growth: Over time, preservatives break down, making the product more susceptible to bacterial and fungal growth. Using a contaminated mask could lead to skin irritation, breakouts, or even infection.
* Changes in Formula: The texture, color, and smell of the mask may have changed, indicating that the formula is no longer stable.
* Potential Irritation: Even if there's no visible contamination, the degraded ingredients can become irritating to the skin.
Always check the expiration date on the product and discard any products that have expired. Your skin's health is worth it.