Keratin is a fibrous protein that is also found in skin, feathers, and hooves. It is a very strong and durable material, which makes it ideal for protecting the body.
Here's a breakdown of the specific components:
* Hair: Hair is made up of keratin fibers that are arranged in a specific way. These fibers are held together by a variety of chemical bonds, which give hair its strength and flexibility. Hair also contains small amounts of water, lipids, and pigments.
* Nails: Nails are made up of a harder form of keratin than hair. They also contain very little water. The cells that make up nails are packed tightly together, which gives them their rigid structure.
Here's a fun fact: Hair and nails are actually considered to be dead tissues. They don't have any blood vessels or nerves, so they don't feel pain when they are cut or trimmed.