When it comes to makeup and skincare, the age of the product can significantly impact its effectiveness and safety. Here is a side-by-side comparison of expired makeup versus new.

1. **Performance**

Expired Makeup: Over time, the active ingredients in makeup can degrade, leading to a decrease in performance. For instance, the pigments may not be as vibrant, the product may not spread as smoothly, or it may not last as long on your skin.

New Makeup: Fresh makeup, on the other hand, performs at its peak. The pigments are vibrant, the application is smooth, and the longevity is as the manufacturer intended.

2. **Safety**

Expired Makeup: As makeup ages, it can become a breeding ground for bacteria, especially products that come in contact with your eyes and mouth. This can lead to skin irritations, infections, and breakouts.

New Makeup: New makeup is typically sterile and safe to use, as long as you follow the recommended usage instructions and keep it properly stored.

3. **Texture and Smell**

Expired Makeup: Changes in texture and smell are common signs that your makeup has expired. The product may become clumpy, dry, or separated, and it may develop an off-putting smell.

New Makeup: New makeup has a consistent texture that's easy to apply, and it should have a neutral or pleasant smell associated with its ingredients.

4. **Efficacy**

Expired Makeup: The efficacy of the product diminishes over time. For example, the SPF in your foundation may not provide the same level of protection, or the antioxidants in your serum may not be as potent.

New Makeup: New makeup delivers the full benefits of its ingredients. The SPF provides the advertised level of protection, the antioxidants are potent, and the product delivers the promised results.

In conclusion, using new makeup is always the best choice for your skin's health and the product's performance. It's essential to regularly check the expiry dates of your makeup and skincare products and replace them as needed.