Crest night effects with retainer?

Question

My retainer isn't the clear, plastic kind. It's the one with the metal bar across the front of my teeth.

Answer 1

While you are wearing your metal retainer, it will be impossible to whiten the area where the metal bar is.

I am assuming this is a removable appliance.....if so, while whitening....remove the retainer.

Over night whitening is not the way to go in your case.  Your retainer is more important than white teeth.

Try using Crest white strips....they are the best over the counter product available.  They require minimal time as well.