COS 20 - Chemical Hair Services Theory

    Recent Professors
    Katalin Miko, Felicia A. Flores, Daniel S. Burke, Victoria L. Griffin
    Recent Semesters
    Spring 2026, Winter 2026
    Class Size
    25 students
    Credits
    3
    Prerequisite
    Prerequisite: Permission of instructor
    Spring 2026 Sections
    View Spring 2026 sections of COS 20
    Transfers To
    CSU
    Description
    In this course, students learn and develop an understanding and knowledge of the basic theoretical concepts that govern and guide salon-industry related chemistry, chemical texture services, and the fundamentals of haircoloring. Topics such as Chemistry, Safety, Haircolor and Chemical Texture applications will be covered. Students will work towards the California State Board of Barbering and Cosmetology minimum hours and practical operations in subjects learned. Theoretical instruction will be applied towards the curriculum minimum requirements to qualify for a Board examination.
    Usually Held
    Fri 11:20am–2:10pm, Mon Tue Wed Thu 4:00pm–6:50pm, Mon Tue Wed Thu 7:00pm–8:15pm