Can I wear a mask over my face after rib rhinoplasty?

You should ask your surgeon about any particular restrictions following the surgery. In general application of lights masks when they are not exerting any pressure on the nose is permitted by most surgeons.

hello thank you for your question and provide information as well.. based in your question the mask light its have pressure on your face so you can use. 
but before ask you plastic surgeon.

As long as the mask does not apply pressure to the nose, it should be fine.  Check in with your plastic surgeon for post operative instructions.