Why Would Obagi Nu Derm Cause Excessive Peeling on my Nose,to the Point of Raw and Bleeding?

Been on obagi nu derm for 4 months. Out of those months I have consistently experienced extreme peeling only on my nose.It peels,bleeds,then scabs over.when I wash my face or touch my nose, scabs come off revealing raw areas,now there are brown patches on nose? I am no longer using product on nose,but it looks too bad to be seen in public.My PS briefly looked t it mont ago,said oh, just leave it alone,it will heal! It has not, I don't know what to do? Will this scar if it ever heals??