What Happens When Lip Serum Expires?

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Posted by Anonymous (Questions: 1582, Answers: 0)
Asked on November 4, 2023 5:34 am
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When a lip serum expires, several changes can occur. These changes can affect the product's appearance, texture, smell, and most importantly, its efficacy and safety.

1. Change in Appearance and Texture: Over time, the consistency of the serum may change. It may become thicker, lumpy, or separated. The color might also change, becoming darker or discolored.

2. Change in Smell: An expired lip serum may develop an off or rancid smell. This is often due to the degradation of the oils or other ingredients in the product.

3. Decreased Efficacy: The active ingredients in the lip serum, such as antioxidants, peptides, or vitamins, can degrade over time. This means that the product will not be as effective as it once was. You might not get the same hydrating, plumping, or smoothing effects.

4. Potential for Irritation or Infection: As products age, they can also become contaminated with bacteria or fungi, which can lead to skin irritations or infections. Preservatives in skincare products are designed to prevent this, but their effectiveness can diminish over time.

Therefore, it's always best to follow the product's expiration date or the period-after-opening (PAO) symbol to ensure you're using safe and effective products. If you notice any changes in your lip serum, it's best to discontinue use.

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Posted by Chemist Marylyne Ghatti, Clean Beauty Specialist Dermatologist (Questions: 0, Answers: 1560)
Answered on November 4, 2023 5:34 am

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