Oregon Barber License (practice test for board exam)

Cuticle - collect answer-Outer most layer of the hair. It consists of a single, overlapping layer of transparent, scale-like cells that resemble shingles on a roof. It protects the inner cortex layer and contributes to 20% of overall strength of hair. The Cortex - collect answer-The middle layer of the hair. A fibrous protein core formed by elongated cells containing melanin to pigment. Gives hair majority of its strength and elasticity. A healthy Cortex contributes to %80 to the overall strength of the hair. Contains melanin that determines hair color. The Medulla - collect answer-The innermost layer of hair. Sometimes absent from hair and doesn't play a role in hair coloring. composed of round cells. Texture - collect answer-The diameter of an individual hair. Density - collect answer-The number of hairs per square inch. Porosity - collect answer-The hairs ability to absorb moisture. Low porosity - collect answer-The cuticle is tight. The hair is resistant (difficult for moisture or chemicals to penetrate. Thus, it requires longer processing time.