Continue Using Expired Retin-A?

In compliance with the company's printed information and in light of publishing this in a public forum, it is in your best interest to discard the product and use material that is not expired.

Although we are stringent in our office not to dispense expired samples (can you believe in Florida this is a criminal offense!), topical medications maintain their potency for at least a year. In fact, Benzoyl Peroxides increase their strength with time. Thus, I see no real problem using a cream two months past the expiration date. In fact, the samples I alluded to coming from my office: I use them on myself and family.
I would be much more fastidious with solutions, drops etc. since the preservatives in these products are not preserved and an eye infection can be serious.
As far as your not noting redness, this often does not happen with Retin A, especially if you are using a lower strength. Also, Retin A does not magically erase wrinkles and lines. What I tell my patilents is that if they use a Retinoid for the next twenty years, I can pretty much guarantee them that in twenty years they will look years younger than their cohorts who do not use Retin A (provided they wear sunscreens and do not smoke).