The short answer: Yes. Crest 3DWhitestrips teeth whitening strips do expire. Check your product's box to find a "best if used by" date.
Can You Use Expired Teeth Whitening Strips?
Yes and no. Technically, Crest 3DWhitestrips that have passed their expiration date are still safe to use. However, we don't recommend using them past their expiration date, because the whitening ingredient's efficacy will be weakened, and you may not experience the best results.
The good news: If you start using your Crest 3DWhitestrips teeth whitening kit when you buy it and use it for the full duration of the treatment, you should be able to complete the full kit before it expires.
Discover MoreCrest Whitestrips Instructions: Safe & Easy Teeth Whitening