How long I can keep my Obagi Nu-Derm on in the morning?

Hydroquinone is recommended to be used for max of 3 months continuously and then give a break of 3 months. Using it for too long can sometimes lead to exogenous ochronosis. During this time good skin care regimen including non hydroquinone products like Obagi Clear Fx or similar can be used...

If your acne is resistant to the Obagi Nuderm system you more than likely have a form of cystic acne which will require multimodal therapy.  Seek the advice of a board certified dermatologist who has treated many acne patients. I hope this was helpful. Dr. B

This is difficult to answer without an in-person evaluation. I suggest seeing a cosmetic dermatologist to get you on a long term plan with microneedling/prp, Viva, Cosmelan, J Plasma, peels, sculptra,facials and skin care. Best, Dr. Emer.