The linguistic root of tzaraath may mean smiting, in comparison with Arabic, in reference to a Talmudical explanation that it serves as a punishment for sin; it is quite possible that tzaraath was a general term for certain types of skin disease, rather than a particular condition, and the Talmud maintains a similar view, arguing that tzaraath referred generally to any disease that produces sores and eruptions on the skin.
Investigations of keratins extracted from wool by reduction hydrolysis and by alkaline hydrolysis showed that their chemical compositions and secondary structures were similar to original wool. The keratin isolates were similar in amino acid, Amides I and II, and secondary structure to each other and to original wool.
Keratin, which is made up of amino acid, is a protein found in hair, skin and nails. Made by cells named keratinocytes it is found in the flat cells of your locks. Keratin keeps your hair strong and healthy. With decreasing level of keratin from hair cells, your locks get dry and more prone to breakage.