GH17 Colour hair using a variety of techniques

1 a What is contact dermatitis?

b State how to avoid developing contact dermatitis when colouring and lightening.

2 State two reasons why it is important to use Personal Protective Equipment (PPE).

3 State two dangers associated with the inhalation of powder lighteners.

4 State five methods of using lighteners safely.

5 State three precautions that must be taken when handling powder lighteners

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6 Explain why it is important when questioning clients to establish any contra-indications to the colouring or lightening service.

7 State two reasons why it is important to record client responses to questioning.

8 Explain the legal significance of questioning the client and recording their responses.

9 State the purpose of the following tests for colouring and lightening services:Elasticity test

Porosity test

Incompatibility test

Skin test

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Colour test

Strand test

10 State when and how the following tests should be carried out and the expected result.Elasticity test

Porosity test

Incompatibility test

Skin test

Colour test

Strand test

11 State two reasons why it is important to follow manufacturers’ instructions for skin testing.

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12 Explain how test results can influence the colouring service.

13 Describe the likely adverse result and the course of action that should be taken in the event of adverse reactions to the following test below:

Elasticity testPorosity testIncompatibility testSkin test

14 State two reasons why it is important to constantly monitor the development of a lightening product.

15 State two consequences of failing to carry out tests.

16 State three reasons why it is important to record test results.

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17 a Draw the Colour Wheel/Star and label the primary and secondary colours

b State the purpose of the colour star/wheel when selecting colour.

c Describe the purpose of the international colour chart (ICC).

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18 Describe what is meant by the term “oxidation”.

19 a State the colours found in each of the folliowing:melanin (eumelanin) pheomelanin.

b Describe how the distribution of melanin creates normal hair colour.

20 Describe the effects the following have on the appearance of colour:a natural light

b artificial light.

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21 Describe two ways the natural pigmentation of hair affects the colouring and lightening process.

22 Explain the reason for pre-lightening.

23 Describe the effects the following colouring products have on the hair structure:

Temporary coloursSemi-permanent coloursQuasi – permanent coloursPermanent coloursLighteners

24 Describe two ways different strengths of hydrogen peroxide affect colouring and lightening.

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25 Describe the effects of temperature on a the application of colouring and lightening

b the development of colouring and lightening.

26 Complete the table to show the ratio of liquid hydrogen peroxide to water required to form the different strengths of solutions:

12% - 3%

9% - 6%

12% - 9%

27 State the pH value of the following products:

Stabilised hydrogen peroxide

Temporary colour

Semi-permanent colour

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Quasi and permanent colour

Lightening products

28 State two reasons why it is important to restore the hair’s pH balance after the colouring and lightening processes.

29 Describe two reasons why it is important to leave the hair and scalp free of colouring and lightening products at the end of the colouring service.

30 State the reasons for and methods of pre-softening and pre-pigmenting hair.

Pre-softening

Pre-pigmenting

31 State two reasons why hair is resistant to artificial colour.

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32 State how and why contra-indications can affect the delivery of the colour service.

Skin sensitivities and disordersHistory of previous allergic reaction to permanent colouring productsOther known allergiesIncompatible productsMedical advice or instructions

33 a Describe two methods of adapting the application of lighteners to minimise scalp sensitivity and hair damage.

b Describe two methods of adapting the removal of lighteners to minimise scalp sensitivity and hair damage.

34 State how and why to adapt the sequence of application to take account of the following:

Existing colour

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Percentage of white hair

35 For each of the following colouring and lightening problems state:a The cause.b Remedial action to take.

Over processing

Under processing

Skin staining

Deterioration of hair condition

Scalp sensitivity

Product seepage

36 State how and why the depth and tone of colour should be restored, when dealing with the following:Minimum fade

Medium fade

Maximum fade37 State a) how and b) why to neutralise colour tone.

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38 State five potential problems of using colouring and lightening products on previously chemically treated hair.

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