The hydrogen peroxide can help break up the crusts inside your nose after Rhinoplasty. But you could also be doing some nasal saline rinses to keep things moist and allow the crusting to break down. Your surgeon can also help take some of the crusting away with instruments. Sometimes depending on what was done, your airway may be too open and this can cause a dry nose syndrome where the inspired air is too easily passing through your nose causing it to dry and also possibly get infected. Your surgeon could help in determining this possibility.
Dr Young is located in Bellevue near Seattle, Washington