Can sunscreen be used in the second year? How to determine whether it can be used?

Sunscreen is also a skin care product that many people like to use. It can protect their skin. So can sunscreen still be used in the second year? How to determine whether sunscreen can be used in the second year?

Can I still use sunscreen in the second year?

If it is unopened, you can continue to use it in the second year. The shelf life of sunscreen is usually 3 to 5 years. But if it has been opened for one year, it is not recommended to use it in the second year. After being opened and exposed to the air, a certain oxidation reaction will occur with oxygen. The sunscreen ingredients will easily volatilize, the sunscreen effect will be greatly weakened, and it may even irritate the skin.

How to determine whether sunscreen can be used in the second year

In addition to looking at the ingredients, some sunscreen bottles will also have a limited use date after opening. You can look for it to see if there is a bottle cap pattern on the bottle. The words 6M and 12M will be printed under the pattern. 6M means it must be used up within 6 months after opening the bottle, and 12M means it must be used up within 12 months after opening the bottle. If the bottle says the expiration date is only one year after opening, then you absolutely cannot use it the following year.

Whether sunscreen can be used in the second year depends on the specific situation. You should still take a look before using it.