Colorado Cosmetology Written Practice Exam 2026 - Free Cosmetology Practice Questions and Study Guide

The technical name for the study of hair is known as trichology. A is not the correct answer because Cosmetology is the study of beauty and cosmetics, which includes hair styling but not specific to hair itself. B is incorrect because Dermatology is the study of skin, hair, and nails but not specifically focused on hair. D is incorrect because Oncology is the study of cancer and its treatment, which does not relate to hair in any way.