(LEC) Hair Coloring Flashcards
(Type of Hair Coloring Product: based on Action)
Adds lighter or darker color to hair.
Hair Dyes
(Type of Hair Coloring Product: based on Action)
Lighten the hair without adding a new color to it
Hair Bleaches
Reaction utilized in hair bleach/es
Oxidation reaction
(T/F) In hair bleaches, melanin is the pigment on the hair and is oxidized and loses its color
True
(Type of Hair Coloring Product: based on Coloring)
Affects outside of hair fibers by weak chemical bonds
Temporary dye/s
(T/F) Color can be removed after one use of shampoo in Temporary dye
True
(T/F) In temporary dyes, the Dimolecule stays on the cortex.
False. On the counterpart of the cuticle.
(Type of Hair Coloring Product: based on Coloring)
Adhere to outside of hair fiber and partially penetrate the cuticle layer
Semi-permanent dye/s
(T/F) Semi-permanent dye colors are removed after 6-20 shampoos.
True.
(Type of Hair Coloring Product: based on Coloring)
Penetrate the cuticle and cortex, contain an oxidizing agent, and have a MORE alkaline pH
Demi-permanent dye/s
(Type of Hair Coloring Product: based on Coloring)
Penetrate both cuticle and cortex, contain HIGHER amount of oxidizing agent and have HIGHLY alkaline pH
Permanent dye/s
(Type of Hair Coloring Product: based on Coloring)
Remove hair color through chemical reaction
Hair bleach/es
Quality Characteristics of Hair Coloring Products
- Gentle to the hair and scalp
- Good coverage for gray hairs
- Does not color skin
- Permanent dyes: long-lasting coloring effect
- Easy to spread on the hair
- Easy to rinse off from the hair
- Well-tolerated and non-allergenic
Quality characteristic of Permanent Dyes
long-lasting coloring effect
Hair Product Types
Non-Oxidizing Products
Oxidizing Products
Hair Bleaches
Non-Oxidizing Products
Temporary Dye
Semi-Permanent
Progressive Hair Dye
(TeSemPro)
Color Rinses
Temporary Dyes
Temporary
Usually liquid products that are applied after shampooing
Color rinses
Temporary
Combine the action of shampoo with that of a color rinse
Color-enhancing shampoo
Temporary
Aerosol products used for parties which are applied to dry hair
Hair color sprays
Available for parties and in natural colors
Mousses
Temporary
Uses film-forming ingredients which serve as both styling and coloring products
Gel and Mousses
Products which give a shimmery effect (often combined with gels and mousses)
Glitters
Coating on hair cuticle easily washed out after first shampooing
Temporary Dyes
Contain azo compounds, triphenylmethane-based
dyes, indoamines, and indophenols
Temporary Dyes
Used to add slight tone, brighten hair, refresh
colored hair, or try out a hair color
Temporary Dyes
(T/F) Temporary Dyes are ideal for patients with less than 50% gray hair.
False. Ideal for patients with less than 15% gray hair.
Examples of Temporary Dyes
Liquids, shampoos, mousses, gels, and sprays
Use dyes that penetrate the hair cuticle
Semi-Permanent Dyes
Used on natural, unbleached hair to cover gray,
add highlights, and cover up unwanted tones
Semi-Permanent Dyes
Contains dye, alkalizing agent, solvent, surfactant,
thickener, fragrance and water
Semi-Permanent Dyes
Applied to hair and left for 20-30 minutes
Semi-Permanent Dyes
Ideal for patients with less than 30% gray hair
Semi-Permanent Dyes
gradual hair dyes or metallic hair dyes
Progressive Hair Dyes
Contain water-soluble metal salts like lead acetate
Progressive Hair Dyes
(T/F) Commonly used ingredient in Progressive dyes is lead acetate
True
Change hair color from gray to yellow-brown to black
Progressive Hair Dyes
(T/F) Mechanism of Progressive hair dyes is that metals interact with CYSTEINE in the cuticle to form METAL SULFIDES
which deposit and accumulate on the cuticle
True
Oxidizing Products
Demi-Permanent Dyes
Permanent Dyes
Composed of a two-component system in highly alkaline formulation and developer or activator like hydrogen peroxide
Oxidizing Products
___________ is used to oxidize melanin which results in a colorless product. It is also a developer/activator.
Hydrogen peroxide
Two components of Oxidizing Products
- Colorless dye intermediates and 2. Couplers
Colorless dye intermediates
PPD, PTD, p-aminophenols
Dye intermediates are also known as?
Skin sensitizer
Dye intermediate that causes scalp redness and itching
Para-phenylenediamine (PPD)
This type of hair dye contain the highest amount of dye intermediates and poses a potential risk for clients
Permanent hair dyes
Eugene Schueller founded this hair product company
L’Oreal
Reported to cause skin irritation, scalp burns, and allergic dermatitis
Hair bleaching
Coal tar dyes
Not approved synthetic organics
(T/F) Coal tar dyes should come with a special warning on the label as required by FDA.
True.
Label: Product cannot be used on eyelashes ad eyebrows (blindness)
Couplers
resorcinol,
m-aminophenols
Contain 2% hydrogen peroxide and lower levels of alkalizers like monoethanolamine
Demi-Permanent Dyes
Washed out after 20-24 shampooing
Demi-Permanent Dyes
Used to enhance and brighten natural hair color
Demi-Permanent Dyes
Used to add red highlights to brown hair
Demi-Permanent Dyes
Can cover up gray hairs up to 50%
Demi-Permanent Dyes
(T/F) Permanent dyes cover entire gray hair and produce new color
True
Contain 6% hydrogen peroxide and ammonia
as alkalizer to attain pH of 9.0-10.5
Permanent Dyes
(T/F) Permanent Dyes are available as kits containing (1) Tint and (2) Conditioner.
False. Available as kits containing (1) Tint consisting of dye intermediates, couplers, and alkalizer, and (2) Developer which is hydrogen peroxide
These are available as kits with Tint, and Developer
Permanent Dyes
Fact or Myth: Red shades tend to fade faster than other
colors.
FACT. Red dye molecules are smaller in particles size therefore can be easily washed off compared to other dyes.
Chemical process that involves removal of natural hair pigment or
artificial hair color
Bleaching
Remove color in an irreversible chemical reaction
Hair Bleach/es
Boosters in hair bleaches
ammonium persulfate or potassium sulfate
(T/F) Hair bleaches are removed by ALKALINE shampoo to reset the pH to normal level.
False. They are removed by ACIDIC shampoo to reset pH to normal level
Performance parameter of hair styling products
Shine and Color Intensity
Affected by lighting, hair color, surface smoothness, hair morphology, hair mass density of the scalp, and hair fiber alignment
Shine and Color Intensity
Fast polarimetric video camera with high polarization contrast used in shine and color intensity parameter.
SAMBA
Used to study hair luster, and hair surface properties like cuticle height, cuticle angle, and surface roughness
Atomic force spectroscopy
This helps determine which prototype formulations you want for your product.
Atomic force spectroscopy