There are generally three simple ways to judge whether lipstick has expired.

1. Usually the shelf life of lipstick is about three years. Generally, the production date and limited use date will be marked on the box and bottom of lipstick, and the date of corresponding lipstick can be marked.

2, you can look at the color, when painting, if the color is very different from before and the color looks uneven, don't use this lipstick again.

3. It can also be judged by the taste of lipstick. If the smell is pungent, this lipstick is out of date.