The new sunbathing season is just around the corner, and it's high time to replenish your sunscreen supplies. The question often arises: does sunscreen actually expire and can you still use the tube from last summer without any problems, even if it's already opened? In this article, we'll explain everything you need to know about the shelf life of sunscreen.
Does sunscreen have an expiration date?
Yes, sunscreens can expire too! Each tube or bottle has either an explicit expiration date printed on it or a symbol with an open jar and a number (for example 12M or 24M). This symbol indicates how many months the cream can be used after opening. In this case, a 12M label means that the sunscreen can be used for 12 months after opening.
What happens if I use expired sunscreen?
The effectiveness of sunscreen is based on chemical or physical UV filters. These filters can break down over time and become less effective. As a result, the specified sun protection factor (SPF) can no longer be guaranteed . The lack of protection increases the risk of sunburn, skin aging and long-term damage such as skin cancer. In addition, components of the cream can separate or oxidize, which can affect the consistency, smell and skin tolerance.
How do I know if my sunscreen is still good?
If you are unsure whether you can still use your sunscreen, look for the following signs:
- Expiry date : If the sunscreen has passed its expiry date or has been open for longer than the date indicated on the jar symbol, complete protection is not guaranteed.
- Smell: If the cream smells unpleasant or different than usual, it is probably spoiled.
- Consistency: Has the cream separated, become lumpy or too runny? This is a clear sign that it is no longer fully effective.
- Color: If the color of the cream has changed, you should stop using the sunscreen.
Tips for the correct storage of sunscreen
- Protect from heat: Store the cream in a cool, dry place. High temperatures, such as those in a heated car, accelerate the decomposition of the ingredients.
- Close tightly: Make sure to close the tube or bottle tightly after each use to minimize the ingress of air and foreign objects.
- Do not share: Avoid sharing the cream with others to prevent contamination.
Summary
Opened sunscreens from last year can still be used provided they have not expired, have been stored correctly and have not changed in smell, consistency or color.
Unopened sunscreens from the previous year can also be used, provided the expiration date is still valid, the storage conditions have been observed and there are no changes in smell, consistency or color.
