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keratin
The most abundant protein in dead epidermal structures is called keratin. It is a fibrous protein that forms the main structural constituent of hair, feathers, hoofs, claws and horns.
It is called Keratinocyte, which is in the outermost layer of the epidermis.
Keratin KeratinKeratin is an extremely strong proteinproteinprotein which is a major component in skin, hair, nails, hooves, horns, and teeth
I screwed up-- the first person had it right. Here's their answer: "A protein is composed of several amino acids chained together - so no melanin is not a protein. Melanin is formed from the amino acid Tyrosine and is NOT a chain of amino acids thus it is not a protein nor is it a amino acid."
which is a protein that makes the skin waterproof
The water insoluble protein accounts for the bulk of the epidermal thickness thickness.
Melanin.
melanin
Collagen is the most abundant protein found in your body.
Keratin
Collagen