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In average, female 's hair life is 4 to 6 years. Man's is about 3 to 4 years. But both grow at the same speed (6 inches per year). Therefore, on average, men's hair are shorted than women's, even they grow the same
Number of years (5 or above). Is this true?
I'm curious about the source of your information. Does it include male-pattern baldness in the statistics? I would think that would skew the stats somewhat.