Facts:
Average number of head hairs:
Hair density:
Hair diameter:
Monthly hair growth:
Total daily hair production:
Number of hairs lost daily:
Life of a hair:
|
100,000 - 150,000
200/cm2
0.1 mm
1 cm
20 - 30 m
50 - 100
2 - 5 years
|
Main constituents of hair:
Protein keratin: cysteine, cystine, and other amino acids
Lipids
Pigment
Vitamins
Traces of zinc, magnesium, iron, copper and selen
Water 10 - 13% |
