A member asked:

I found a box of crest white strips that have an expiration dating back to 2007!!! i fully understand that they will not be as effective as using a current treatment but with them being over 14 years old, will they even work at all? maybe?

2 doctors weighed in across 2 answers

They will probably not work at all, although if they do, I would not trust the result.

Answered 5/28/2021

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It is not everyday that someone comes across 14 year old stuff and do not discard it right away. So in my personal view, only way is to try and find out. Company making Crest will be delighted to know if you are successful. If it causes any harm, onus will be on you . Good luck. Hope it helps.

Answered 6/5/2021

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