How long does sunscreen last after opening? Reading the jar symbol and spotting a bottle that’s past it
That tiny jar symbol on your sunscreen isn’t just decoration—it tells you exactly how many months your formula stays effective after opening. Most sunscreens last 6 to 12 months once unsealed, but heat, humidity, and improper storage can cut that short. Here’s how to read the label and spot a bottle that’s past its prime.