How does hair grow ?

Monday, April 9, 2012 Leave a Comment

Hair structure
Hair Deep structure
                  Hair is formed in minute pockets in the skin , called follicles . An up growth at the base of the follicles called papilla actually produces hair , when a special group of calls turn amino acids into the hair keratin . The rate of the production of these protein " building blocks " determines hair growth . The average growth rate is  about 1.2cm per month , growing more quickly on the crown and at the back of the head .Hair grows faster on women between the ages of 15 and 30 .

                 On your head you'll have around 90,000 to 150,000 strands , which means on average we grow about 60 meters of hair a day .

                 Each follicle produces hair for between two and four years , followed by a period of two to six months during which the hair becomes loose and is pushed out as the follicle commences production of new hair . In this  ways  , 50 to 100 hairs a day are lose and hair length is normally limited to 45cm to 60cm . A record hair length  , however  was more than two meters .


Color structure of the hair in dermis



                   Each hair is supplied with its own conditioning agent  called sebum . This is produced in the sebaceous gland , situated in the side wall of each follicle . This sebum is necessary to maintain the normal condition of the skin and hair , reducing damage by preventing loss of moisture . The amount  produced varies from person to person  and can be influenced by factors such as diet , nervous tension , scalp massage , age and ill health  .  The sebaceous glands are particularly active during adolescence .


For knowing basic  structure of hair Go to :

For knowing more about Follicle growth cycle : For read

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