N-Acetyl-4-hydroxy-L-proline is widely used in the cosmetic industry as a key ingredient in skincare products. It is known for its ability to enhance skin hydration and improve elasticity, making it a popular choice in anti-aging formulations. The compound helps to stimulate collagen synthesis, which contributes to reducing the appearance of fine lines and wrinkles. Additionally, it is used in hair care products to strengthen hair fibers and improve overall hair health. In the pharmaceutical sector, it serves as a precursor in the synthesis of various drugs, particularly those targeting connective tissue disorders. Its role in biochemical research includes studying collagen metabolism and related pathways.