DL-o-Tyrosine is widely used in the pharmaceutical industry as a precursor for the synthesis of various drugs, including those targeting neurological disorders. It serves as a building block in the production of L-DOPA, a critical medication for managing Parkinson's disease. In the field of biochemistry, it is employed in research studies to investigate enzyme activity, particularly in tyrosine hydroxylase and other enzymes involved in neurotransmitter synthesis. Additionally, DL-o-Tyrosine is utilized in nutritional supplements aimed at improving cognitive function and reducing stress, as it plays a role in the production of dopamine and other catecholamines. Its application extends to the cosmetic industry, where it is incorporated into formulations designed to enhance skin health and reduce signs of aging by promoting melanin synthesis.