Helpfulbox Now Offers Free POS Software for restaurants, kiosk, and any other retails business completely free used windows cashier system or as full blown POS. You will able to print to kitchen, display orders on the kitchen screen, manage inventory, employee, report, customer loyalty offers, employee management, delivery address track and much more, al for free.

Question: Why does hair curl? Why do only some people have curly hair? Why is hair on some parts of the body curlier than on others?

.......
By: Guest
Date: Thu-Feb-18-2016-
Response
0
Its something to do with the hair shaft and hair proteins. Can't remember quite how it works, but if you have more of the particular proteins in your hair then you will have curly hair and vice versa
[d] By: Guest
Date: Thu-Feb-18-2016
Response
0
the protiens that make hair are alpha protiens, helices. they bond together with disulphide bonds in triplets, then these bond together, then those bond together, etc etc. this forms a strand of hair. because of the helix structure, there is a curl to the hair structure anyway, but if some of the alpha protiens are expressed slightly differently, then they will have a definable kink in them - curly hair. it could also be to do with the nature of the disulphide bonds in the hair too (i'm not sure which, this was a fair bit back).

when hair burns, you smell sulphur - that's because of the disulphide bonds breaking in the heat. a chemical change. in a similar fashion, the bonds become deformed when permed, hence the wave in your hair. if you use tongs, it shortens the bonds in a circular fashion, making a curl. if you use straighteners, it shortens the bonds uniformly, so they all become straight.

naturally curly hair is usually genetic, but can sometimes be environmental, ie, some people develop curly or wavy hair through their lives.
Supplement from 06/14/2006 11:26pm: the curly hair on other parts of the body is expressed that way from the dna which is slightly different to head hair, eyebrows or eyelashes. it's curly to trap pheremones from sweat and assorted excretions. and also to provide a cushioning effect, preventing chafing and suchlike.
[d] By: Guest
Date: Thu-Feb-18-2016
Response
0
I'm sure when I was a kid I was told it had something to do with the shape of the folicles, but I might be (and probably am) wrong.
[d] By: Guest
Date: Thu-Feb-18-2016
Response
What is 1 + 100



Helpfulbox Now Offers Free POS Software

for restaurants, kiosk, and any other retails business completely free. It can be used as windows cashier system or as full blown POS. You will able to print to kitchen, display orders on the kitchen screen, manage inventory, employee, report, customer loyalty offers, employee management, delivery address track and much more, all for free.

Just Updated::