1. Haircoloring Chapter 21

2. Draw the three layers of hair
CUTICLE
CORTEX
MEDULLA

3. Three layers of hair

4. Cuticle – Outermost layer, Protection, Scale-like, 20% strength Cortex – Middle layer, gives strength, contains melanin, 80 % strength Medulla – inner most layer, sometimes missing in fine hair.

5. Qualities of hair ~
TEXTURE
DENSITY
POROSITY
ELASTICITY

6. ~ 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

7. DENSITY Hairs per square inch Thick hair or thin hair?
The thicker the hair the thinner the sections

8. Density ~ What hair color has the most density? The least?

9. 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

10. Porosity – Which hair will take color fastest?

11. 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

12. Law of Color
Primary colors

13. Law of color
Secondary

14. Law of Color
Tertiary colors

15. Complimentary colors
Opposite colors combi on

16. Types of haircolor
Temporary
Semi Permanent
Demi Permanent
Permanent

18. Two categories of haircolor
Non Oxidative
No lift
Oxidative
lift – with the use of peroxide