Why does trimming hair promote faster growth?

Gnomon

It doesn't. Hair grows at the same rate no matter how long it is. But it will appear to grow faster, because it is growing more in proportion to its own length. For example, if your hair grows by 1mm per day, and it is 1mm long, then next day it will have doubled in length. But if it is 10cm long, it will have only increased in length by 1% in a day. Jun 19 06, 3:41 AM

peasypod

Like Gnomom says, it doesn't. What will, is nourishment from a healthy dietary intake. Jun 19 06, 7:26 AM

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When you cut your hair, it usually grows fast to a certain length and then stops. Now how on earth does either the follicle or the hair itself know how long a hair is, and what controls the rate of growth? Why does hair turn grey? Why does putting salt into water make it boil faster? According to Ayurveda, what diet is best for hair growth?

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