Glycyl-DL-serine is commonly used in biochemical research as a dipeptide model to study peptide synthesis and degradation processes. It serves as a substrate in enzymatic studies to understand the activity of proteases and peptidases. Additionally, it is utilized in the development of nutrient media for cell cultures, particularly in microbiology and biotechnology, to support the growth of specific microorganisms. Its role in mimicking natural peptides also makes it valuable in the study of protein folding and stability. Furthermore, Glycyl-DL-serine is explored in the formulation of cosmetic and pharmaceutical products for its potential skin-conditioning and moisturizing properties.