Hair Texture
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Medium texture indicates a middle-range of the size of the hair shaft. It's considered normal and poses no special considerations regarding processing and chemical services.
Fine hair, conversely, is often very easy to process, and can be over-processed easily and is susceptible to damage from chemical services.
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Hair texture varies from individual to individual and can be different in separate areas of the same head. You may have coarse hair on the top of the head and fine hair at the nape of the neck.
Race and ethnicity are irrelevant in determining hair texture, as coarse, medium and fine hair can be found among all racial and ethnic groups.
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See also:
Hair elasticity Hair density
Hair porosity Hair wave pattern