Each hair is unique in its own way, and as such can not be collected in exact figures each hair type.
The following figures are averages:
58 to 100 microns - the diameter of a hair. But since the section of hair is oval, it can not determine the full accuracy. Micron is one millionth of a meter or one thousandth of a millimetre therefore need to gather from 10 to 20 hairs in one place, to achieve a thickness of 1 mm
from 120,000 to 150,000 - the number of hairs
250 - number of hairs in a square centimetre of scalp - usually this figure ranges from 200 to 300 depending on the area on the scalp
6 m2 - All of hair length 20 cm This is an important figure, we consider a shampoo - then we must wash area measuring six square meters!
1.3 g - weight of 1kub.sm. hair
- 30% of their body weight - the percentage of water that hair in good condition can be absorbed. When hair is damaged, this percentage reaches 45%
1 cm per month - the rate at which a hair grows. This corresponds to 0.3 mm and 12 cm per year. That is an average figure, many hair grow much faster
As summarize all these figures we see that produces hair to 36 meters per day, 1.1 km. per month, or more than 13 km. per year!
Since hair is "produced" from the root tip of the hair so long is 12 centimetres a year. But as per one hair growth cycle is 3 years, rarely seen hair longer than 1 meter.
World record for hair length 4.2 m. If this hair is growing at normal speed, would mean that she is 35 years!
50 to 100 - the number of hairs that we lose everyday
100 grams - the weight that a hair can withstand. Therefore strand of 100 hair can withstand the burden weighing 10 kg. And all hair weight 12 tonnes!
50% of original length - the percentage by which can stretch a hair before break
3 times a week - many times people in Europe to wash their hair. A quarter of the population of my hair every day.
80% of North Americans and 90% of Asians wash your hair twice a day
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