The document discusses color theory as it relates to hair coloring. It describes the primary colors of red, yellow, and blue. Secondary colors are created by combining two primary colors, such as orange from red and yellow. A color star or wheel is used to demonstrate how complementary colors opposite each other on the wheel, like red and green, can neutralize each other. When doing color corrections, it is important to understand complementary colors and use them to neutralize unwanted tones, taking care to match the intensity of the correcting color.

1. Unit GH17
The colour star
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Colour hair using a variety of techniques
GH17 – Colour hair using a variety of
techniques

2. Unit GH17
The primary colours are:
RED
YELLOW
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BLUE
Colour hair using a variety of techniques
The primary colours

3. Unit GH17
The secondary colours are achieved by combining
TWO of the primary colours.
When you take the primary colour RED…
…and add the primary colour YELLOW…
…you get the secondary colour ORANGE.
© Pearson Education 2009
Printing and photocopying permitted
Colour hair using a variety of techniques
The secondary colours: Orange

4. Unit GH17
The secondary colours are achieved by combining
TWO of the primary colours.
When you take the primary colour BLUE…
…and add the primary colour YELLOW…
…you get the secondary colour GREEN.
© Pearson Education 2009
Printing and photocopying permitted
Colour hair using a variety of techniques
The secondary colours: Green

5. Unit GH17
The secondary colours are achieved by combining
TWO of the primary colours.
When you take the primary colour RED…
…and add the primary colour BLUE…
…you get the secondary colour VIOLET.
© Pearson Education 2009
Printing and photocopying permitted
Colour hair using a variety of techniques
The secondary colours: Violet

6. Unit GH17
The colour star is used
to show the range of
primary and secondary
colours.
 Warm colours range
from RED through
ORANGE (Copper) to
YELLOW (Gold)
 Cool colours range
from GREEN through
BLUE to VIOLET
© Pearson Education 2009
Printing and photocopying permitted
Colour hair using a variety of techniques
The colour star

7. Unit GH17
Complementary colours
are those colours that
fall on opposite sides of
the colour star.
 RED and GREEN
 YELLOW and
VIOLET
 BLUE and ORANGE
Complementary colours
neutralise each other.
© Pearson Education 2009
Printing and photocopying permitted
Colour hair using a variety of techniques
Complementary colours

8. Unit GH17
You must know the principles of the colour star when
carrying out a colour correction service.
 Use complementary (opposite) colours to neutralise
unwanted tones. For example, violet will neutralise
unwanted yellow (gold).
 There are shampoos available to neutralise
unwanted colour tone.
 However, you must remember to consider the
intensity of the colour.
© Pearson Education 2009
Printing and photocopying permitted
Colour hair using a variety of techniques
Colour correction

9. Unit GH17
Some keys to good practice when carrying out a colour
correction service are:
 Take care not to use a darker or more vibrant colour
than is necessary.
 Assess the depth of the client’s hair colour and use a
slightly lighter depth.
 Make sure that the intensity of the tone is the same.
For example, neutralise nicotine staining on white
hair with a silver colour rather than a more intense
violet.
© Pearson Education 2009
Printing and photocopying permitted
Colour hair using a variety of techniques
Considering colour intensity