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Haircoloring Chapter 21. Draw the three layers of hair. CUTICLE CORTEX MEDULLA. Three layers of hair.

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draw the three layers of hair
Draw the three layers of hair
  • CUTICLE
  • CORTEX
  • MEDULLA
slide4

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
Qualities of hair ~
  • TEXTURE
  • DENSITY
  • POROSITY
  • ELASTICITY
texture
~ 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
DENSITY
  • Hairs per square inch
  • Thick hair or thin hair?
  • The thicker the hair the thinner the sections
porosity
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
elasticity
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
Law of Color
  • Primary colors
law of color1
Law of color
  • Secondary
law of color2
Law of Color
  • Tertiary colors
complimentary colors
Complimentary colors
  • Opposite colors combi on
types of haircolor
Types of haircolor
  • Temporary
  • Semi Permanent
  • Demi Permanent
  • Permanent
two categories of haircolor
Two categories of haircolor
  • Non Oxidative
    • No lift

Oxidative

    • lift – with the use of peroxide