skin.melanin is the pigment for skin colour and keratin gives elasticity to the skin. keratin is also in hair and fingernail...it is in basicaly every part of your body because it is mainly protein.
keratin
Nails are made of keratin, a fibrous structural protein. It is also a key component of hair and the outside layer of skin.
shopping Hair Nails
The exoskeleton (carapace) is made mainly of chitin, also a component of our hair and nails!
your nails and hair
What hair and nails have in common is that they grow. A hair and nails what they have in command is that they are the same as dogs.
Selenium is important for hair and nails.
Nebuchadnezzar's hair and nails grew long.
Because your entire body is growing and constantly healing like a cut does. Maybe we don't utilize the worth of the hair and nails as we have in the past centuries or now even. I've heard of hair being used for mix with mud to go in between logs in a log house.
Flaxseed oil is said to promote the growth of healthy nails and hair. What it does is nourishes the hair and nails to prevent brittle nails and split ends.
There no nerves in the hair and nails