Keratin

in #cheveux7 years ago

Keratin is a protein, synthesized and used by many living creatures as a structural element, and also the typical example of fibrous protein. It is the main constituent of the dander (hair, feathers, horns, nails, beaks of many animals), indeed, the hair is composed of 95% of this keratin that protects against UV, sea water and water. other external factors that attack it. image