The pores and skin, hair, and the nails are literally made up of a number of proteins, together with keratin, collagen, and elastin. Keratin, collagen, and elastin are made up of amino acids (they’re generally referred to as the constructing blocks of protein). The place does our physique get these amino acids, which then change into keratin, collagen, and elastin? Consuming protein, be that from a plant or animal supply.