Card Set Information
Texture Porosity Elasticity and density
Four most important Texture, Porosity, Elasticity and density
Course, Medium & Fine
Course Hair Texture
Largest in diameter. Stronger... Think rope... Requires more processing
The most common - The standard to which all other hair is compared. Does not pose any special problems
Smallest diameter - most fragile - easier to process. more susceptible to damage from chemical service that course or medium.
Can Texture vary from strand to strand
Yes, it is not uncommon for hair from different parts of the head to have a different texture.
The degree of porosity is the directly related to the condition of the hair. Healthy hair has a compact cuticle layer and naturally resistant to penetration = High Porosity
Overly processed hair = overly porous hair and allows moister to penetrate vs repelling off... Takes longer to dry etc...
Can hair texture help determine porosity?
Yes, Course Hair normally has low porosity. Always test four parts of the head for porosity:
Hairline, temple, crown and nape.
Ability to stretch and return. Dry hair stretches 20% of the lenght. Hair with low elasticity is unable to hold curl from wet or thermal drying or permanent wave. Lower PH process required.
Is the number of hair per sq. inch. How many hairs on the head, Low, Med, High. Average is 2200 per sq. in with a total average of 100,000. Color helps determine density
Density per natural hair color
Blond Hair = 140K, Brown 110K, Black = 108K and Red = 80K