The rate of growth of hair is approximately fifteen millimetres a month. This is around 6/8th of an inch in every month. Hair growth however differs in different people and may be as little as one centimetre in some people. This growth is in itself not uniform and may differ from person to person. Hair growth will measure twelve centimetres in one year and can cross sixty centimetres in five years. A person with waist length hair has probably spent seven years growing their hair as it is approximately 80-90 cm long. There are approximately a hundred thousand hair follicles on the human scalp. The hair and nails are the only two that continue to grow for sometime after a person is laid to rest in their grave.
Hair grows approximately at around 15 cm or 6 inches every year. Hair grows from individual hair follicles. At the root of the shaft of hair, new hair cells are formed inside the follicle. As they form, new cells push out the older ones, which die and thus form the hair we see.
Individual hairs alternate between periods of growth and dormancy. During the growth phase of their cycle, hair follicles grow approximately a third of a millimeter in a day. One study even quotes the rate of hair growth as 0.44 millimeters a day. This means that people with short hair may have to wait for around 4 years to get that desired waist-length hair. This is followed by a rest (dormant) period for after about 3 to 6 months and then the cycle continues. Age, genetics, and hormonal state are factors that can cause hair to grow faster or slower.
Actually. Hair grows about 1 cm per month...it really depends on the person, what race they are, how they take care of their hair, and other things like that. But on average a persons hari will grow 1 cm per month.
