How many hairs grow on a human head?

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The answer

100,000 hairs

About 100,000. Between 90,000 and 150,000 depending on hair colour.

How to get there

1. about 650 cm² of scalp
2. × about 150 hairs per cm²
3. = about 100,000

Source: Wikipedia: Hair, 90,000 (red) to 150,000 (blonde)

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