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3rd shift Topics > Hair Coloring > Flashcards

Hair Coloring Flashcards

1
Q

Local Brand Shares of Colourants: % Value 2020

A
  • Loreal
  • Kolours
  • Revlon
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2
Q

28.4%

A

Loreal

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3
Q

17.2%

A

Kolours

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4
Q

14.5%

A

Revlon

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5
Q

add lighter or darker
color to the hair

A

Hair dyes

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6
Q

lighten the hair without adding a new color to it

A

hair bleaches

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7
Q

penetrate the cuticle and cortex, contain an oxidizing agent, and have a more alkaline pH

A

Demi-permanent dyes

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8
Q

affects outside of hair fibers by weak chemical bonds

A

Temporary dyes

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9
Q

adhere to outside
of hair fiber and partially penetrate the cuticle layer

A

Semi-permanent dyes

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10
Q

penetrate both cuticle and cortex, contain higher amount of oxidizing agent and have highly alkaline pH

A

Permanent dyes

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11
Q

remove hair color through chemical reaction

A

Hair bleaches

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12
Q

Non-Oxidizing Products

A
  • Temporary Dyes (Color Rinses)
  • Semi-Permanent Dyes
  • Progressive Hair Dyes
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13
Q

▪ Coating on hair cuticle easily washed out after first shampooing
▪ Contain azo compounds, triphenylmethane-based dyes, indoamines, and indophenols

A

Temporary Dyes (Color Rinses)

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14
Q
  • Used to add slight tone, brighten hair, refresh colored hair, or try out a hair color
    ▪ Liquids, shampoos, mousses, gels, and sprays
A

Temporary Dyes (Color Rinses)

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15
Q

temporary dyes: ideal for patients with _____ gray hair

A

15%

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16
Q

▪ Use dyes that penetrate the hair cuticle
▪ Used on natural, unbleached hair to cover gray, add highlights, and cover up unwanted tones
▪ Has slightly alkaline pH (7-9)

A

Semi-Permanent Dyes

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17
Q

▪ Contains dye, alkalizing agent, solvent, surfactant,
thickener, fragrance and water
▪ Applied to hair and left for 20-30 minutes

A

Semi-Permanent Dyes

18
Q

Semi-permanent dyes: ideal for patients with ____ gray hair

A

30%

19
Q

▪ Known as gradual hair dyes or metallic hair dyes
▪ Contain water soluble metal salts like lead acetate

A

Progressive Hair Dyes

20
Q

Progressive hair dye: Metal interact with _____ in the cuticle to form ______ which deposit and accumulate on the cuticle

A

cysteine; metal sulfides

21
Q

▪ Commonly used ingredient is lead acetate
▪ Change hair color from gray to yellow-brown to black

A

Progressive Hair Dyes

22
Q

Commonly used ingredient in progressive hair dyes

A

lead acetate

23
Q
  • often permanent in effects and has a two component system
  • first component in highly alkaline formulation, and developer or activator like hydrogen peroxide
A

Oxidizing Products

24
Q

(Two-component system) First component: highly alkaline formulation

A
  • colorless dye intermediates
  • couplers
25
Q

colorless dye intermediates

A
  • p-phenylenediamine (PPD)
  • p-toluene diamine (PTD)
  • p-aminophenols
26
Q

Couplers

A
  • resorcinol
  • m-aminophenols
27
Q

Second component:

A

developer or activator: hydrogen peroxide

28
Q

Oxidizing Products

A
  • Demi-Permanent Dyes
  • Permanent Dyes

(they differ in conc. of hydrogen peroxide and alkalizers)

29
Q

▪ Washed out after 20-24 shampooing

A

Demi-Permanent Dyes

30
Q

Demi permanent dye: Contain _______ hydrogen peroxide and lower levels
of alkalizers like __________

A

2%; monoethanolamine

31
Q
  • Used to enhance and brighten natural hair color
    ▪ Used to add red highlights to brown hair
    ▪ Can cover up gray hairs up to 50%
A

Demi-Permanent Dyes

32
Q

▪ Used to cover entire gray hair and produce new color

A

Permanent Dyes

33
Q

Permanent hair dye: Contain ______ hydrogen peroxide and ______
as alkalizer to attain pH of ______

A

6%; ammonia; 9.0-10.5

34
Q

Permanent Dyes (tint)

A

dye intermediates, couplers, and alkalizer,

35
Q

Permanent Dyes (Developer)

A

hydrogen peroxide

36
Q

red shades fades faster than other colors (t or f) in terms of permanent colors

A

T

37
Q
  • no new color
  • Chemical process that involves removal of natural hair pigment or
    artificial hair color
    ▪ Remove color in an irreversible chemical reaction
A

Hair bleaches

38
Q

Hair Bleaches: Removed by _______ to reset pH to normal level

A

acidic shampoo

39
Q

Hair bleaches: Alkaline solutions containing hydrogen peroxide with boosters like
_____ or ______

A

ammonium persulfate or potassium sulfate

40
Q

PERFORMANCE PARAMETERS

A

SHINE AND COLOR INTENSITY

41
Q

is a fast polarimetric video camera with high polarization
contrast

A

SAMBA®

42
Q

is used to study hair luster, and hair surface properties like cuticle height, cuticle angle, and surface roughness

A

Atomic force spectroscopy

3rd shift Topics (12 decks)

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