Expired medication: Probably not dangerous, but well past it's prime and not effective. Best way to whiten teeth, see your Dentist. OTCs are not very effective even at full potency.
Answered 3/20/2020
92 views
No danger, : unless it has been refrigerated it may no longer be active enough to work properly. I recommend getting fresh whitening gel.
Answered 3/20/2020
91 views
3 doctors weighed in across 3 answers
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