Africa’s stolen glory “Since microscopic analysis shows ancient Egyptian hair to be completely African, why does the hair look Caucasoid? Research has given us the answers. Hair is made of keratin protein. Keratin is composed of amino acid chains called polypeptides. In a hair, two such chains are called cross-chain polypeptides. These are held together by disulphide bonds. The bulk of the hair, the source of its strength and curl, is called the cortex. The hair shafts are made of a protective outer layer called the cuticle. We are informed by Afro Hair - A Salon Book, that chemicals for bleaching, penning and straightening hair must reach the cortex to be effective. For hair to be permed or straightened the disulphide bonds in the cortex must be broken. The anthropologist Daniel Hardy writing in the American Journal of Physical Anthropology, tells us that keratin is stable owing to disulphide bonds. However, when hair is exposed to harsh conditions it can lead to oxidation of protein molecules in the cortex, which leads to the alteration of hair texture, such as straightening”.
Posted on: Wed, 24 Jul 2013 13:41:34 +0000
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