Used as a flavor and fragrance additive in the food and cosmetic industries due to its fruity, citrus-like aroma. Commonly found in artificial fruit flavors, particularly in apple and pear flavor formulations. Also serves as an intermediate in organic synthesis for producing more complex ketones and fragrance compounds. Its volatility and solubility characteristics make it suitable for use in perfumes, soaps, and household cleaners where a mild, pleasant scent is desired. Additionally, 6-undecanone is utilized as a natural insect repellent, especially effective against mosquitoes, leveraging its odor to deter pests in personal care products and environmental applications.