Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Hairdressing > Bleach > Flashcards

Bleach Flashcards

1
Q

2 types of bleach

A

Cream bleach

Powder lightener

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cream Bleach

A
  • A mild form of lightener, which is more gentle on the scalp
  • Has a creamy consistency as is has added conditioning properties
  • Activators can be added and this will boost their lightening strength
  • Cream bleach won’t run or drip because of its consistency
  • Can be used on scalp
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Powder bleach

A
  • Generally stronger then cream bleach
  • Can be mixed with a higher strength of hydrogen peroxide to give maximum lift off scalp
  • Can be mixed with a lower strength hydrogen peroxide for on scalp lightening
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does bleach do to the hair chemically?

A

-Hydrogen peroxide is an oxidising agent
Main chemical is ammonia hydroxide

-Bleach powder is an alkaline substance.
Main chemical is sodium acetate/ammonium carbonate.

-When the two are mixed together oxygen is released from the hydrogen peroxide which reacts with the colour pigments making them lighter.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does bleach do to the hair physically?

A

Because bleach products are alkaline when they are mixed with hydrogen peroxide this will soften open and swell the cuticle allowing the bleach to enter the cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Visual effect

What are the seven stages of lightening?

A
  • Black
  • Brown/red
  • Red
  • Red/orange
  • Orange/gold
  • Gold/yellow
  • Yellow/lemon
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Removing artificial colour

A
  • Bleach and hydrogen peroxide (Oxidation) will lighten artificial colour with uneven results
  • A colour redactor (reduction) will only remove artificial colour, leaving a more even result
  • it will swell and open the cuticle
  • reduce/remove the colour molecules
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Manufacturer instructions

A

Always read manufacturers instructions as they can vary slightly from company to company and also from product to product.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

full virgin head application

straight through application technique

A
  • First read manufacturers instructions
  • Start where the hair is the darkest (usually the nape) 0.5 cm sections
  • Apply straight through from roots to ends
  • Apply generously to both sides of the mesh and work into sections with the fingers
  • Place the sections against each other - DO NOT PACK DOWN
  • Continue with each section moving towards the front until all four quarters are covered
  • Check the hair
  • When any area first gets to the desired target level remove the bleach
  • Shampoo powder lightener from the hair
  • Dry the hair
  • Reapply powder lightener to the other areas which have not reached the desired level of lightness
  • When all the hair has reached the desired level, wash product out of the hair, shampoo, rinse
  • Apply conditioner or antioxidant
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Heat band application technique

A
  • First read manufacturers instructions
  • Start where the hair is the darkest (usually the nape) 0.5 cm sections - 2 cm away from the scalp
  • Apply to mid-lengths and ends (depending on porosity of the hair).
  • Apply generously to both sides of the mesh and work into sections with the fingers
  • Place sections against each other - DO NOT PACK DOWN
  • Continue with each section moving towards the front until all four quarters are covered
  • Check
  • When the hair starts to lighten (10-15 minutes) start applying mixture to the roots quickly but carefully
  • Leave 10 minutes - strand test - 10 minutes etc.
  • When the hair has reached the desired level, wash product out of the hair, shampoo, rinse then shampoo again
  • Apply conditioner or anti-oxidant
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Watch the heat band

A
  • We have a heat band over the first 2 cm of the hair from the scalp.
  • The hair in this area (the heat band) will speed up the processing time of the product
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Overlapping retouch

A

-This causes a line of demarcation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Strand test

A
  • Wipe a small strand of hair with cotton wool or tissue and check the colour
  • Remember to reapply bleach to the strand test if it is not fully developed
  • It is a good idea to remove the product off the hair at the scalp with the end of your tint brush/tail comb to enable you to have a good look at the root hair.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How can we protect ourselves and our clients?

A

-Read the manufacturers instructions for the product we are using
-Have a good understanding of the effects of the products you could choose to use
-Select products wisely that will give the best result
-Do a thorough client consultation and hair and scalp analysis
Colourists to wear gloves at all times when working with chemicals
-If in doubt of the final result do a pre-strand test using the products you plan to use and check the result.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the precautions when applying powder lightener?

A
  • Never pack the hair down
  • Always remember to reapply to tested area
  • Do not comb through
  • Keep your partings small
  • Ensure a fast application, but thorough
  • Always consider the hairs porosity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Precautions when partial head powder lightener

A
  • Ensure to take clean sections
  • Use a barrier cream on the hair not to be lightened
  • Use extra clips, glad wrap to remove extra hair from the area to be bleached
  • Protective material to cover hair and skin
17
Q

When highlighting hair using bleach

A
  • Mixing ratio: follow your Manufacturers Instructions, a good consistency is needed so product is not runny, this could cause bleach to bleed
  • Do not foils to tightly as this can cause the bleach to bleed onto roots and push the product off the hair in the foil creases
  • Ensure a quick but thorough application and bleach works quickly
  • Consider the strength of developer chosen for the amount of lift needed
  • Ensure close enough to the scalp so as not to cause an instant regrowth
18
Q

What is the purpose of a toner

A
  • To change the reflect/tone of the hair after a bleach service
  • There are varied colour choices
  • Warm, cool, neutral
  • Remember when toning an allergy test must be given 24-48 hours before colouring depending on MI’s
  • The toner should be chosen before the bleach service as to the clients wishes and to achieve the outcome the client would like.
19
Q

Consideration when choosing a toner

A
  • The hairs porosity
  • What level do you need to bleach to achieve the target reflect/tone
  • What reflect does the client want
  • If in doubt it is advised to performa pre-strand test
20
Q

What toners can be used?

A
  • Temporary toner—lasts 1-2 shampoos
  • Semi-permanent toner—Lasts 8-15 shampoos
  • Permanent toner—Grows out, may also fade
  • Midway toner—Lasts 15-40 shampoos
21
Q

Toner application

A
  • First read the MI’s
  • Toner can be applied to either damp or dry hair, ensure you follow MI’s (Hair to be thoroughly towel dried)
  • Consider carefully the whole of the hair strands porosity
  • If porosity is even, then the toner is applied straight through roots to ends
  • If the ends are porous then a porosity filler should be applied first then onto the porous ends
  • Adjust the timing to give sn even result
  • Mulch through at completion of the application ensure even distribution

-Strand test regularly to check the result. Timing may vary from 5-30 minutes

22
Q

What are the 3 stages the hair will go through before application of a blonde toner?

A

GOLD

YELLOW

LEMON (almost white)

23
Q

How can a toner be removed from the hair?

A
  • To the MI’s
  • Could be rinsed
  • Rinsed and conditioned
  • Shampooed and conditioned

Hairdressing (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions