COS 161: Haircolor

Citrus College Course Outline of Record

Citrus College Course Outline of Record
Heading Value
Effective Term: Fall 2023
Credits: 8
Total Contact Hours: 255
Lecture Hours : 100
Lab Hours: 155
Hours Arranged: 0
Outside of Class Hours: 200
Total Student Learning Hours: 455
Prerequisite: COS 141.
Transferable to CSU: No
Transferable to UC: No
Grading Method: Standard Letter

Catalog Course Description

A continuation of the science, theory, professional haircoloring techniques, and procedures following COS 141. Lectures, demonstrations, and practical experience in the following areas: advanced hair coloring procedures, advanced lightening procedures, specialized color application, and corrective haircolor. 100 lecture hours, 155 lab hours.

Course Objectives

  • Demonstrate the knowledge and ability to perform advanced color applications.
  • Demonstrate safety, sanitation and applications according to State Board criteria.
  • Comprehend the various chemicals used to perform advanced color applications: permanent, semi-permanent, demi-permanent, developers, decolorizers, color remover.
  • Comprehend advanced design principles for color design: repetition, alternation, contrast, progression.
  • Differentiate between the following: levels, tone, density, harmony, complementary.
  • Demonstrate advanced techniques: weaving, slicing, block patterns, triangle sectioning, pattern sectioning, zones.
  • Successfully analyze hair integrity and apply corrective haircolor techniques and applications.
  • Develop strong communication skills regarding advanced color design.

Major Course Content

Health and Safety

  1. State Board rules and regulations
  2. State Board licensure procedures
  3. Predisposition test
  4. Infection Control


  1. Aniline Derivative
  2. Permanent/Semi/Demi Color
  3. Product diversity

Advanced Color Techniques

  1. Combination Form Color Design
  2. Highlights/Slicing/Lowlights
  3. Zonal Hair Color
  4. Virgin Lighter/Decolorizer
  5. Contrasting Highlights
  6. Zonal Highlights
  7. Contrast-Base and Ends


  1. Levels/Stages
  2. On/Off Scalp
  3. Developers
  4. Powder/Oil
  5. Manufacturers

Corrective Color

  1. Artificial Color Remover
  2. Back to Natural
  3. Tone
  4. Hair Integrity
  5. Recondition
  6. High Definition Colors


  1. Hair analysis
  2. Compare and contrast manufacturers products


  1. Record keeping
  2. Consultation

Lab Content

  1. State Board Application
    1. Safety and Sanitation
    2. Virgin/Retouch to Darken
    3. Virgin/Retouch to Lighten
    4. Back to Natural
    5. Virgin/Retouch Decolorizer
    6. Virgin/Retouch Toner
  2. Advanced Weave/Slice
    1. Highlight
    2. Lowlight
    3. Combination Highlights/Virgin Hair Color
    4. Panels/Zones
    5. Block Patterns
  3. Corrective Color
    1. Back to Natural
    2. Removal of Artificial Color
    3. Level Differences
    4. Zonal Lift/Deposit
    5. Tone
  4. Products
    1. Aniline Derivative
    2. Decolorizers
    3. Developers
    4. Toners
    5. Demi/Semi Permanent
    6. Color Removers
    7. High Intensity Color
  5. Communication
    1. Consultation
    2. Record Keeping

Suggested Reading Other Than Required Textbook

Advanced/Professional Haircoloring Magazines and Periodicals

Examples of Required Writing Assignments

Write essays for haircolor project presentations explaining procedures. Weekly homework assignments in workbook.

Examples of Outside Assignments

Visit hair salons and video advanced haircoloring techniques. Write a paper on the experience, information and observations made. Participate in hairshow activities and events related to haircolor. Prepare a project using advanced haircolor techniques.

Instruction Type(s)

Lab, Lecture, Online Education Lab, Online Education Lecture