<s>[INST] I had a subdural hematoma a year ago, and would like to rinse/dye my hair is it safe? I understand that the holes they drilled in my head will never close and my concern is will the dye seep through and do harm. [/INST] No the dye will not seep through. This doesnt mean that you are safe from the usual problems of Dye- allergy. </s>