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Haircolor

cosmetology Studying

QuestionAnswer
In choosing hair color for a client, a determining factor is the hair structure
The layer of the hair that provides strength is the cuticle layer
Hair color applied to fine hair may look darker
Haircoloring services on coarse-textured hair may take longer to process
Hair with a tight cuticle resistant to moisture or chemicals is defined as having low porosity
The predominant melanin that gives black or brown color to hair is eumelanin
Pigment that lies under the natural color is the contributing pigment
Colors that we see are contained in the visible light spectrum
Artificial hair colors are developed from the primary and secondary colors that form base colors
A system that is used to understand color relationships in the law of color
Red added to blue-based colors will cause them to appear lighter
A color achieved by mixing a secondary color and its neighboring primary color is a tertiary color
Equal proportions of primary colors will produce black
A primary and secondary color positioned opposite each other on the color wheel are complementary colors
The processing of diffusing natural color pigment or artificial color from the hair is hair lightening
All permanent hair color products and lighteners contain an oxidizing agent and a alkalizing ingredient
A hair-lightening process occurs when the alkaline peroxide breaks up the melanin
Temporary color pigment molecules do not penetrate because they are large
Semi permanent hair color on average should last 4 to 6 weeks
Hair coloring that penetrates the hair shaft and is formulated to deposit but not lift color is demi permanent hair color
Demi permanent hair color is available in a variety of formulas including creams, gels, and liquid
Uncolored dye precursors that can be diffused into the hair shaft are used in permanent hair color formulas
Dye precursors that combine with hydrogen peroxide to form larger tint molecules are aniline derivatives
Although many semi permanent and demi permanent colors use alkalizing agents other then ammonia, they are necessarily any less damaging
Permanent hair coloring products are mixed with hydrogen peroxide
Hair coloring products that change hair color by creating a progressive build up contain metallic dyes
Lighteners are chemical compounds that lighten natural hair pigment by dispersing, dissolving, and decolorizing
When hydrogen peroxide is mixed with lightener formula, it releases oxygen
During the decolorization process, natural hair can go through as many as 10 stages
Toners are used to achieve pale, delicate colors and are applied to create the correct degree of contributing pigment
To determine how hair will react to a selected color formula, perform a preliminary strand test
Overlapping color can cause breakage and create a sign of roots or line of demarcation
For a single process color for virgin hair, the color processes fastest at the scalp
Cream lighteners are formulated to be used on the scalp
The three forms of hair lighteners are oil, powder, and cream
An oxidizer added to hydrogen peroxide to increase its lifting power action i an activator
A foil technique where a straight and narrow section of hair at the scalp is positioned for color or lightener application is slicing
In the foil technique when selected strands are picked up from a narrow section of hair with a zigzag motion of the comb, and lightener is applied in biliage
When coloring for a client with 80 -100 percent gray, the color levels that provide the best coverage are level 7 or darker
To cover unpigmented hair in a salt-and-pepper client, the color formulation should be one shade darker than the desired level
Pretreating gray or very resistant hair to allow for better penetration is presoftening
Created by: BrittneeB
 

 



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