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A "Hair-y" Summary:
- Average number of hairs on the head: 100,000
- With reddish hair: 90,000
- With black hair: 110,000
- With blond hair: 140,000
- Maximal length of hair: 70 to 90 cm
- Annual growth: 12 cm
- Female hair grows more slowly than male hair
- Male hair is more dense than female hair
- Lifespan of hair: 2 to 7 years
- Diameter of hair: 0.1 mm
- Load-carrying capacity: 100 grams (~one chocolate bar)
- Humidity stretches the hair
- Combing is less detrimental than brushing
- Correct shampooing will not dry out the hair
- Frequent washing does not increase loss of hair
- Hair grows faster in warm weather
- Elderly people have slower hair growth and diminished hair density
- Cutting hair does not influence its growth
- Spliced ends can not be repaired and need to be cut
- Wet hair should not be rubbed since hair is very sensitive
