My Obagi Nu-Derm clear has turned dark. Is it ok to use?
Safe to Use Obagi Nu-Derm That Turned Dark?
Doctor Answers (2)
?Vitamin C Oxidation
This product contains hydroquinone and Vitamin C. Vitamin C is an unstable compound and oxidizes readily. This most likely accounts for the brown discoloration. While I doubt whether it is harmful, it probably has lost some potency. This is a prescription product due to its containing 4% Hydroquinone. It would be a good idea to ask the physician who prescribed it for another bottle if it was received in that condition.
These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.