You are all set. Your retin-a does not require to be refrigerated. The only acne medication that required refrigeration was benzaclin which does not require it anymore.
Does Retin A Need Refrigeration
Doctor Answers 5
Keep Retin-A at room temperature...
NO! Keep Retin-A at room temperature, and use only at night for best results.
Dr. Grant Stevens
Retin-A is Stored at Room Temperature
Retin-A is typically stored at room temperature and will not loose any of its potency until long after its expiration date.
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Retin-a and refrigeration
Retin-a can be kept at room-temperature without any negative effects on its effectiveness. Retin-a should not, however, be exposed to sunlight.