The purpose of protein synthesis is simply to create a polypeptide -- a protein made out of a chain of amino acids. In a hair follicle cell, a protein called keratin is made. Lots of it.

Biotin (Vitamin B7) is essential for keratin synthesis. Though rare, biotin deficiency is associated with hair thinning, and to overcome this, biotin-rich foods like eggs, almonds, sweet potatoes ...

The synthesis of keratin, which affects skin, hair, and nails, depends on biotin. According to research, hair loss and other health problems might result from a biotin shortage. Vitamin B7 ...