Why grows the hair on the back of your head longer than other hair?

for example, the hair growing on my legs will never be more than 3 cm. Why can the hair on the back of my head then grow 20+ cm? or:for example, the h

for example, the hair growing on my legs will never be more than 3 cm. Why can the hair on the back of my head then grow 20+ cm?

or:for example, the hair growing on my legs will never be more than 3 cm. Why can the hair on the back of my head then grow 20+ cm?

or:Begin with shampoo ok??????????????????????????????????

or:Hi, leg hair grow not more then 3 cm but head grow as you need to long them if you will not care your hair with good shampoo and conditioner then it will harm so use continue same products as you need for your hair and you can buy online from salonsavings.com

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