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Details For: Hair Thickness

Term  
Hair Thickness

Definition  
Hair thickness can be measured by using a special micrometer screw gauge or by means of a special attachment to a microsope. A hair is usually the same thickness all along its length and has an average thickness of 0-05 millimeters. When soaked in water, a hair will increase in thickness by a greater proportion than it increases in length, as water entering the air spaces between the fibers of the cortex causes the hair to swell.

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The National Cosmetology Association Hall of Fame is located in St. Louis, Missouri. New members are inducted into the Cosmetology Hall of Fame at the annual convention held every summer.