The typical human head has between 100,000 to 150,000 hair follicles that create dense hair. All these hairs do not come out separately through the scalp, but they are organized in follicular units, groups of 1 to 4 hairs each one. There are around 50,000 to 65,000 follicular units on the scalp. Totally the human body has around 5 million hair follicles. At any moment, about 90% of hairs on scalp are actively growing. This specific period, known as anagen, can last from two to seven years, however the regular is about 3 years. In catagen, that is the shortest period long lasting about 2 or 3 weeks, growth stops, the middle of the follicle shrinks plus the lower part expands to create the club. Other 10% of head hairs are in a sleeping status known as telogen which, in a scalp, can last around three or four months.
Each time a hair gets into it is sleeping period, growth ends and also the bulb detaches from papilla. The old hair is came out since the new shaft begins to grow. Whenever an old hair is fell out, a little, white-colored swelling is appeared at the bottom of the shaft. Many people consider that this could be the growth centre of the hair, however it is simply the clubbed, separated lower end of the hair shaft.
People usually lose around one hundred hairs each day. All people have several hairs stuck to the hair comb whenever they comb their hair. The existence of many of hairs on the comb or in the sink can be a indication of hair loss due to, a result of health problem or maybe drugs. Genetic hair loss however, is not caused by extreme hair loss but instead by the hair replacement that is normally lost with small, good quality hair. This process known as miniaturization which will be talked about in detail in other pages of this guide.