Well, Cosmetics are a mixture of so many things, and nothing lasts forever, so, of course, there is an expiry date on them for a reason. Basically, it is there to let the consumer know that after using it on them after they said they are not sure it will be safe for the user.
So, yeah, go ahead and clean up the expired products, and you will save so much more in the hospital and skin treatment due to the ill effects of using expired cosmetics. It's your choice to gamble. Nice day.