According to Merriam-Webster, a trichologist is "a person who specializes in hair and scalp care and treatment of associated conditions." More and more stylists and salon owners are familiarizing themselves with Trichology because it is so important, especially if you are working with hair and looking at people's scalps all day. Cosmetology school teaches stylists plenty about hair but not enough about the scalp, and that's why studying Trichology is vital in being a hairstylist.