A few weeks ago, Paul and I reorganized our linen closets.
One of the closets has a shelf of toiletries, medicines, lotions, etc.
There in the back, were some neutrogena #50 lotions and a couple of no-ad #30.
All of them expired in 2014.
I did not throw them out.
Instead I messaged a friend who holds a phd in chemical engineering and asked her opinion .
(she developed dry stick deodorant/antiperspirant for major company)
she knows her stuff.
she said, by law the manufacturer MUST put on an expiration date of 12 mos or 18 mos from when it was packaged.
she said.....use those sun block lotions and add 2+ years to the dates on the packaging.
so over the last couple of days, paul and i have been using them and they are working.
use your own judgment, ...if you have some that have expired, you may want to consider using it.