We don' know: We don't know for sure. That is why they have an expiration date! using them beyond tat date is at your own risk. I would not recommend it.
Answered 2/7/2015
5.6k views
None: I wouldn't take a chance...There is an expiration date for a reason....I would get new unexpired contacts...Not worth the risk to use out-dated product...
Answered 12/29/2016
5.6k views
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