all things sanitation & safety , color edition !

predisposition test

aka patch test — this determines if a client is allergic to hair color products containing an aniline derivative

preliminary strand test

the second step in a color consultation ; this test is done as a safety precaution to avoid excessive damage & ensure the guest ‘ s satisfaction prior the entire service

what does a preliminary test do ?

shows color results prior to applying it over the entire head , determined exact processing time , shows the reaction of the hair color on strand to determine if addition products are needed & helps detect residues such as metallic or compound dyes

what are the signs of an allergic reaction after a patch test ?

rashes , hives , swelling or inflammation

what is a release statement ?

a form affirming that your guest was advised of the potential risks that could result during the color service .

processing strand test

aka periodic strand test , this determines if the hair color is absorbing & processing evenly .

melanin

the coloring matter that provides natural color to the hair , skin & eyes — also located in the cortex layer of the hair .

eumelanin

produced brown to black pigments in the hair

pheomelanin

produces red to yellow pigments in the hair

mixed melanin

the combination of eumelanin & pheomelanin inside one cell

canities

the gradual slowing down of melanin production in the cortex , aka gray hair

how many types of canities is there ?

two

acquired canities

when melanocytes gradually become inactive & typically occurs when the human body ages & / or because of genetics . a primary factor that begins this process is heredity .

congenital canities

occurs at birth ; albinism is the best example this , where melanin production slows or is completely absent .

what are the three types of gray hair ?

light gray , medium gray & dark gray

how do you color unequal amounts of pigment on gray hair ?

use all three primary colors — color selection , developer strength & processing time play a vital role .

what is the law of color ?

a system that provides the understanding of color relationships .

what is a color wheel ?

a support tool for the law of color

what are the three primary colors ?

red , yellow & blue

what are primary colors ?

the three basic starting colors by which all other colors are created from

what are the three secondary colors ?

violet , orange & green

what are secondary colors ?

colors that can be made by mixing two primary colors .

what are the three tertiary colors ?

red - orange , blue - green & blue - violet

what are tertiary colors ?

colors that are made by mixing primary colors with an analogous secondary color

what are the three groups of complementary colors ?

blue & orange , yellow & violet + red & green

what are complementary colors ?

comes that are directly across from each other on the color wheel

what is a color scheme ?

a collection of two or more colors grouped / mixed together to produce various molds , effects & enhancements to natural hair color .

monochromatic colors

all the colors of a single hue that are created from a single base hue & modified with additions of black , gray & white

analogous colors

colors that are next to each other on the color wheel ; when grouped , they achieve very dramatic effects ( i . e blue , blue - green , green )

neutral colors

colors that aren ‘ t located in the visible light spectrum & contain minimal to no pigment or color — they exist either through the reflection or absorption of light ! ( white , black + gray )

tone

aka hue , is the balance of color — this is also its industry accepted name .

warm tones

these colors are associated with fire or the sun — they include red , yellow or orange . they appear lighter than the natural level of had & tend to be more prominent

cool tones

associated with the sky or water — these colors range from green , blue & violet . they create a flat , neutral effect

undertone

aka contributing pigment ? i’d the warm or cool toned seen within the predominant hair color — they ‘ re a result of the natural pigment found within hair .

intensity

the strength of a color ‘ s appearance , which is determined by the tone ‘ s degree of saturation & purity of light reflection .

tints

created by adding white to a color

shades

created by adding gray or black to a color

value

the darkness or lightness of a color