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Occasional Contributor
Posts: 14
Registered: ‎03-10-2010

Do ya think physical sunscreens really expire? My skin does better with a physical sunscreen only, so I've tried to stay away from the chemical ones. I got to thinking if they are all physical, do they really expire? (I know they still have expiration dates on them but thought maybe they don't expire really??). How could zinc oxide or titanium dioxide really expire?