The basic structure of haor and nails is KERATIN.
protein
your moms chest hair
nails or your hair
Both are made from a structural protein called Keratin.
epidermis
your nails and hair
Yes. They can form them as in 'building' them, or form them in the sense that hair and nails are non-living things.
Protein. Hair and nails are made of modified versions of skin cells. These cells contain a protein called keratin. Keratin is a chain of amino acids that form the cytoskeleton (a form of mini-skeleton) of the cell, which thus forms the hair follicle or finger nail.
Selenium is important for hair and nails.
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