L-Serine is widely used in the pharmaceutical industry as a key component in the synthesis of several drugs, including antivirals and antibiotics. It serves as a building block for peptides and proteins in biotechnological applications, especially in cell culture media formulations for the production of monoclonal antibodies and recombinant proteins. In skincare products, L-Serine is valued for its moisturizing properties, helping to improve skin barrier function and hydration, particularly in products designed for sensitive or dry skin. It is also used in nutritional supplements due to its role in metabolic processes, including the synthesis of sphingolipids and neurotransmitters in the central nervous system. Additionally, L-Serine is employed in research settings to study neurological disorders, as it acts as a neuromodulator and precursor to D-serine, which influences NMDA receptor activity.