Amino Acid, The Building Block of Hair Let’s talk about the function of amino acids. Amino acids not only participate in protein formation but are also precursors of various biologygical substances like neurotransmitter pigments of your skin, biological substance and hormones. They are also an essential part of body homeostasis and glucose homeostasis keeping your glucose levels in check. Here are the three most important amino acids that place some praise in our body and our hair. https://issuu.com/punhnutrition/docs/amino_acid_the_building_block_of_hair