Terminology ... Formula is a mixture of haircolor products used to create the desired shade – the “recipe” used by the haircolorist to color the client/guest’s hair.
Gray Hair is the result of
a gradual decline in melanin production located in the cortex layer of the hair.
Cortex
Melanin
Haircolor is the melanin located in the cortex layer and/or the artificial pigments from actual haircoloring products that are responsible for providing color to the hair.
Highlighting is a special effects
service that lightens selected pieces of hair with the use of lightener and/or haircolor.
1
Hue is the general name for color.
18 H A I R C O L O R I N G
Terminology ... Hydrometer is an instrument that
measures the specific gravity of a liquid (an example is hydrogen peroxide).
Level is determining the
Hydrometer
degree of lightness to darkness of a color depending on how much light is reflected or absorbed.
Lightening is when haircolor or lightener is
applied, causing the natural or artificial pigments in the hair to lift to higher levels of color. It is the opposite of going darker.
Line of Demarcation is a dark band (or visible line) that is a result of haircolor overlapping onto previously colored hair.
Line of Demarcation
Before New Color After New Color
New Growth Previously Colored Hair
Chapter 1 •
T E R MINO L O G Y
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Terminology ...
10,000,0
00
0
1,000,00
0
1
100,000
2
10,000
Patch or Predisposition Test
3
1,000
is applying a small amount of haircolor mixture on the skin to check for skin sensitivity of product/chemical.
4
100
5
10
Average pH of hair
6
1
7
10
pH Scale is the measurement
NEUTR “pure” AL water
”
8
100
Acid
9
1,000 1 0 10,000 1
of hydrogen ion concentration in a solution to determine if it is acid, 100 ,000 neutral or alkaline. 1,00 0,000
10,000,0
1
12 13
00 14
Alkalin
e
Pigments are what
give color its color, whether the source is natural, chemical or mineral.
1
Porosity is the
amount of water/ liquid the hair (cuticle) absorbs within a relative amount of time.
Saturation is a combination of pigment concentration and light reflection, which results in a multitude of colors.
Chapter 1 •
T E R MINO L O G Y
21