Colour type and hydrogen peroxide devoleper review Flashcards

1
Q

what is a non-oxidative colour?

A

•Consists of temporary and semi-permanent
•A pre-coloured molecule that generally are absorbed on or near the surface of the hair

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2
Q

what is an oxidative colour

A

•formulated to deposit only

•demi-permanent (no-lift)

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3
Q

What are three examples of a temporary colour

A

-colour rinsed
-hair mascara
-spray on colour

temporary colour only makes a physical change

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4
Q

can semi-permanent lift the hair when colouring

A

no, it’s not mixed with peroxide and is deposit only

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5
Q

what is the pH of a demi hair colour

A

7.0-9.0

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6
Q

demi applications can also be described as _____.

A

no lift

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7
Q

demi permanent is formulated to ____ but not ______colour.

A

deposit
lighten

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8
Q

give 3 examples of why we might use a demi haircolour

A

-grey blending
-refreshing faded permanent colour
-great for toning

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9
Q

why can permanent colour lighten and deposit at the same time in a single process?

A

they are more alkaline than a demi-permanent colour.

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10
Q

what is the pH of permanent colour

A

9.2-10.6

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11
Q

what volume of peroxide should be used to achieve grey hair coverage with permanent colours?

A

20 vol

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12
Q

peroxide combined with ammonia based colour helps the molecules reach the _____ of the hair shaft

A

cortex

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13
Q

what is the pH of peroxide

A

2.5-4.5

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14
Q

how many levels can 30 volume developer used with permanent colour lift?

A

up to 3 levels.

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15
Q

what volume developers are mixed with demi colours

A

6-13 vol called demi lotions

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16
Q

What volume developer has the ability to lift up to 4 levels?

A

40 vol

17
Q

when should you use 10 volume developer

A

to deposit and enhance natural colour, never on grey hair.

18
Q

when should you use 20 volume developer?

A

20 volume with permanent hair colour must be used for complete grey coverage

19
Q

when should you use 30 volume developer?

A

used with permanent colour on virgin hair for additional lift, up to three levels

20
Q

when should you use 40 volume developer

A

up to four levels of lift on virgin hair when mixed with permanent colour; used with most high lift colours

21
Q

when should you use 6-13 volume developer

A

low volume developers that are used specifically with demi-permanent hair colour, deposit colour only.