Pentadecanoyl ethanolamide is primarily used in the field of cosmetics and skincare due to its moisturizing and skin-conditioning properties. It helps to improve the skin's barrier function, retaining hydration and enhancing elasticity. Additionally, it is incorporated into formulations aimed at soothing and calming irritated skin, making it a valuable ingredient in products designed for sensitive skin types. Its application extends to anti-aging creams, where it assists in reducing the appearance of fine lines and wrinkles by promoting skin repair and regeneration. In hair care products, it helps to strengthen and protect hair strands, improving overall hair health and appearance.