The shelf life of sunscreen will be shortened after opening

How long is the shelf life of sunscreen? Many girls buy larger bottles of sunscreen, and then find that they haven't used them up after the summer. They want to know how long the shelf life of sunscreen is? Can they keep it for next year? Let's take a look at it together~

Sunscreen shelf life

The shelf life of unopened sunscreen is generally three years, but it is best to use up the opened sunscreen within the same year. This is because the opened sunscreen will come into contact with the air, which contains many bacteria and microorganisms that are invisible to the naked eye, which will accelerate the loss of sunscreen ingredients in the sunscreen. Therefore, it is best to use up the opened sunscreen within the same year.

Can I still use sunscreen next year?

Sunscreen can still be used next year, but it is not recommended to use it again. Because if the sunscreen is stored for one year after opening, the sunscreen ingredients in it will oxidize. If you use it again, it will not have the original sunscreen effect, or may even have no sunscreen effect at all, so there is no point in using it again. The most important thing is that if the sunscreen is stored for a year, it is possible that it has been contaminated by bacteria. If it is used again, it is likely to cause skin allergies such as redness, swelling, and stinging, so it is best not to save the sunscreen for use next year.