Chemistry

*Hair begins to grow in the womb from around the 6th month.

*Hair evolved as a means of protecting the head.

*Vitamins A,B-2,B-6, amino acids ,iron and copper etc. are good for the hair.

*Hair growth is affected by the autonomous nerve system and hormonal balance.

*The human head has from 100,000 to 150,000 hairs.

*The average life span of a strand of hair is 5 to 6 years.

*From 50 to 60 strands of hair are replaced everyday.

*A strand of hair grows at a rate of about one half inch a month.

*The thickness of a strand of hair is from 2/100 inch to 6/100 inch.

*Hair contains 80￣90% of proteins(keratin) of its whole atom.

*A strand of hair is composed of three different parts with functions analogous to bone, flesh and skin of the human body.