No, you should not use 15-year-old lipstick.
According to the provided reference, "lipsticks have a shelf life of one year before you should begin to get wary." Using a lipstick that is 15 years old is far beyond its recommended shelf life and poses several potential risks.
Why You Shouldn't Use Expired Lipstick
- Changes in Texture: Over time, lipstick can change texture, becoming dry, crumbly, or hard to apply. This is a clear sign of degradation.
- Loss of Efficacy: Long-wearing lipsticks and liners can dry out, losing their ability to adhere well to the lips. The color may also fade or become uneven.
- Bacterial Growth: Expired lipsticks can harbor bacteria, leading to potential irritation, infections, or allergic reactions.
- Compromised Ingredients: The chemical compounds within the lipstick can break down, potentially causing skin sensitivity or other adverse effects.
Safe Practices with Lipstick
Here are some tips for using lipstick safely:
- Check the Expiry Date: While not all lipsticks have a clear expiry date, a good guideline is to discard after one year of opening the product.
- Look for Signs of Degradation: Pay attention to changes in texture, smell, and color. If you notice any of these, it's time to get rid of the lipstick.
- Proper Storage: Store lipsticks in a cool, dry place away from direct sunlight and heat.
Using expired lipsticks, especially those 15 years old, is not advised and can pose risks to your health and well-being.
