from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The study of beards.
from The Century Dictionary and Cyclopedia
- n. The study of beards; a treatise on beards.
pogono- + -ology (Wiktionary)
For inspiration, I recommend the "Hair India: A Guide to the Bizarre Beards and Magnificent Moustaches of Hindustan," a photography book that celebrates the fine art of pogonology, or the study of facial hair.