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Choosing the the correct developer for hair color is as important, if not more, than the shades you are formulating with. Developer is a big deal, but often times it is totally overlooked. Spoiler Alert: Hair Texture is the #1 determining factor when choosing the right developer. If you don’t have the right know-how you may pick the wrong developer which will leave you with a color formula that has unpredictable results and possibly some damage to the hair.

Here’s what you’ll learn:

    • What Three Jobs Does Developer Do?
    • Different Strengths of Developer
    • How Damaging Developer Can Be
    • How long developer needs to process for
    • What happens if you Don’t Choose the Right Strength?
    • Formulation Scenarios
    • Common Mistakes
    • How to beat brassy hair

Also included in this lesson is a very easy Developer Chart Quick Guide which shows you the correct developer for the hair texture for what you are trying to achieve, plus it includes minimum processing times. This is the lesson that will make you more confident in your formulation choices, using developer to lighten hair and how to preventing brassy hair.

After purchasing this lesson, my biggest piece of advice is to watch the video first, and then watch it again while answering the workbook questions. It’s important that you actually understand your answers so you can remember this information while working behind the chair.

This Single Lesson Purchase Includes 1 video lesson (35 minutes) and 1 workbook.

*If you’re interested in purchasing all three lessons in Haircolor Foundations Course, please click here.

Meet Your Teacher

Heather Ward Kepshire, Creator

  • Educated in San Francisco
  • Refined in Boston
  • Thrived Everywhere Else


I’m a hairstylist and a haircolor curriculum creator. I know first hand that none of us receives the haircolor education we thought we would get in Beauty School, no matter how much we paid for it. When I graduated and passed my State Boards I knew virtually nothing about haircolor formulation.


Yet still 15 years later, newly licensed hairstylists continue to struggle like I once did with haircolor formulation because they are not being taught how to formulate haircolor, consult with a client, or build a loyal following.


I am bridging the gap between the Beauty School education you received, and all the things you need to know about haircolor formulation to help you thrive behind the chair quickly.


Every hairstylist deserves the chance to have a profitable career, regardless of the salon they work in or the brand of products they use. If you want to make more money, feel more confident with haircolor formulation, and get so popular with clients you have no choice but to keep raising your prices, you’re in the right place.

Defining Developers
$65Haircolor Foundations • Lesson Two
  • 1 Video Lesson
  • 1 Workbook
Haircolor Foundations Bundle
  • 3 Video Lessons
  • 3 Workbooks
  • Salon Exercises
12 Lesson Master Class
  • 12 Video Lessons
  • 12 Workbooks
  • 12 Workbook Answer Keys
  • Salon Exercises
  • Model Release Forms
  • Headsheets
  • Color Wheels
  • Underlying Pigment Chart
  • Color Maps

Course & Defining Developers

Frequently Asked Questions (FAQs)

When does the course start and finish?

The course starts immediately after purchase! It is a completely self-paced online course – you decide when you start and when you finish.


What if I am unhappy with the course?

We would never want you to be unhappy! If you are unsatisfied with your purchase, contact us in the first 30 days and we will give you a full refund.


How can color education be brand-neutral?

It’s simple, color theory is just science and rules. Every color line will have their own nuances, but this is all the real information you need to get you up to speed and formulating confidently.


What does haircolor developer do?

Developer supplies oxygen to a formula, which will help to facilitate the artificial dye molecules to realize their full potential in the hair.


How do you get rid of brassy hair color?

Brassy hair color can be controlled by Violet, Blue, or Green tones.  The easiest way to control brassy hair is by originally formulating to control the natural underlying pigment in a client’s color formula. Brassy hair is also created by natural environmental elements, and that can be controlled by violet or blue color deposit shampoo.


What happens if you put too much developer in hair dye?

Too much developer added to a hair color formula will dilute the artificial dye molecules, and add too much oxygen to the formula.  This will typically display a sheer end result that does not have the depth you may have anticipated.  Depending on the volume of the developer, there may be risk of damaging the hair by adding too much developer to the formula.