Hair structure Flashcards
Colorless, translucent casing over the hair shaft :
Cuticle
Because there are more yellow and red pigments then black and brown, they are more difficult to remove from hair shaft.
Pheomelanin pigment
Mid length hair absorbs color :: quickly
Less
Diffused melanin
Pheomelanin
The part of the hair lying below the surface of the outer-layer of skin (i.e. the epidermis layer) :
Hair root
Hair color must penetrate the :: before it reaches the : :
Cuticle : : Cortex
Tubular core found in center of the hair shaft :
Medulla
When both types of melanin are present in one melanin granule :
Mixed melanin
Natural black to red pigment; sometimes known as “granular”
Eumelanin pigment
Because of their larger size, fewer granules are needed to color hair shaft.
Eumelanin pigment
Natural pigment found in hair and skin :
Melanin
The visible part of the hair that protrudes through the skin. It consists of layers of of fused, dead, keratinized cells :
Hair shaft
Because there are fewer pigment granules, this pigment is more easily removed from the hair shaft:
Eumelanin pigment
Lifting color occurres 5-15x faster in the scalp area, partly because of : : and : :
Heat and texture
Contains the great bulk of melanin found lodged between its fibers :
Cortex
The absence of pigment in the hair :
Canities
More porous portions of the hair, such as the : :, tend to absorb color more quickly.
Ends
3 types of melanin :
Eumelanin, pheomelanin and mixed melanin
Natural red to pale yellow; sometimes known as “diffused”
Pheomelanin pigment
Granular melanin :
Eumelanin
Hair at the scalp; softer in texture than the more keratinized hair in mid-length and ends.
New growth
Overlapping scales on the hair shaft, containing no natural hair color :
Cuticle
Color is formed in the : : by 3 types of : :
Cortex :: Melanocytes
A sub-category of pheomelanin pigment found in natural sandy-red hair. They are responsible for natural strawberry-blonde shades.
Trichochromes
The hair structure is made up of :
The cuticle, cortex and the medulla
