The Molecular Structure of Hair
Made by: Sabrina Sparks
The making/growing of hair
A hair grows 0.3 to 0.5mm per day - about 1 to 1.5cm a month and 12 to 15cm a year.
The average person's head has 100,000 to 150,000 hairs.
A single hair can support up to 100 grams in weight and a whole head of hair could support
up to 12 tons.
Hair is the second fastest growing tissue in the body.
Children lose an average of 90 hairs each day, which increases to 120 by old age.