haircoloring chapter 21. draw the three layers of hair cuticle cortex medulla
TRANSCRIPT
Haircoloring Chapter 21
Draw the three layers of hair
CUTICLECORTEXMEDULLA
Three layers of hair
Cuticle – Outermost layer, Protection, Scale-like, 20% strengthCortex – Middle layer, gives strength, contains melanin, 80 % strengthMedulla – inner most layer, sometimes missing in fine hair.
Qualities of hair ~TEXTURE
DENSITY
POROSITY
ELASTICITY
~ TEXTURE TEXTURE- The diameter of a single hair
strand COARSE HAIR– LARGE DIAMETER
Takes longer to process, most resistant MEDIUM HAIR – MEDIUM DIAMETER FINE HAIR – SMALL DIAMETER
Processes faster, less resistant
DENSITY Hairs per square inch Thick hair or thin hair? The thicker the hair the thinner the
sections
Density ~ What hair color has the most density? The least?
POROSITY The ability of hair to absorb liquids
High porosity Cuticle highly lifted, damaged, rough Hair takes or processes faster
Average porosity Normal – healthy hair Slightly raised cuticle Average/Normal processing time
Low porosity Cuticle very tight, smooth, shiny More resistant, takes longer to process
Porosity – Which hair will take color fastest?
ELASTICITY
The ability of hair to stretch without breaking
Hair should stretch __50___ % of it's length
“Pull Test” is used to test elasticity of hair
Law of Color
Primary colors
Law of colorSecondary
Law of ColorTertiary colors
Complimentary colors Opposite colors combi on
Types of haircolorTemporarySemi Permanent
Demi Permanent
Permanent
Two categories of haircolor Non Oxidative
No lift
Oxidative lift – with the use of peroxide