I am nearly sixty and have a nose covered by blackheads, despite using a variety of treatments. They're even in my ears! I wash with Cetaphil, twice a day. I use Duac and eat a healthy diet. I have had a course of microdemabrasion treatments, one per month for six months. Nothing seems to help. My doctor checked my hormonal balance, and it is normal for someone post-menopausal. What can I do?