How to check the shelf life of cosmetics? How long is the shelf life after opening?

Cosmetics are used by many people during the makeup process. If you are not careful, these cosmetics will expire. What should we do about the shelf life of these cosmetics? How long is the shelf life of cosmetics after opening?

How to check the shelf life of cosmetics

In foreign countries, the shelf life of cosmetics is 3 or 5 years. According to foreign legislation, products with a shelf life of more than 3 years are not required to be marked with the production date and shelf life. Therefore, each company uses its own batch number instead. They add their own algorithm to the batch number to ensure that the production date of their products can be determined by batch. !Therefore, each company’s batch number format is different, and it is like reading a mystery to ordinary people, so some professional query software is needed.

How long is the shelf life of cosmetics after opening?

Skin care products after opening are completely different from those after unopening. After opening, skin care products lose their protection and are attacked by multiple damages such as bacteria, sunlight, and oxygen. Therefore, the shelf life is shortened accordingly, from the previous three-year unopened shelf life to one year after opening, or even less than a year. Not only do expired skin care products fail to play their due role, they may also cause a series of adverse skin reactions.

If our skin care products change color, smell, etc. after opening, or become stratified, and the texture is different from before use, don't hesitate, throw it away immediately.