Keratin is formed from a process called keratinization during which the cytoplasm of mammalian cells are replaced by keratin protein filaments, die and form tough resistant structures such as hair, skin and nails. Bioactive keratin is derived from sheep's wool.

How is keratin produced?

Keratin can be derived from the feathers, horns, and wool of different animals and used as an ingredient in hair cosmetics. Since keratin is the structural building block of your hair, some people believe that keratin supplements, products, and treatments can help strengthen your hair and make it look healthier.

How is keratin formed in the human body?

Hair grows by forming new cells at the base of the root. These cells multiply to form a rod of tissue in the skin. The rods of cells move upward through the skin as new cells form beneath them. As they move up, they're cut off from their supply of nourishment and start to form a hard protein called keratin.