linalool

Linalool is a naturally occurring terpene alcohol with the chemical formula C10H18O. It exists as two enantiomers, (R)-(+)-linalool and (S)-(-)-linalool, which have distinct odor profiles. It is a common constituent of many essential oils and occurs in more than 200 plant species, including lavender, coriander, basil, and mint. Linalool is valued for its floral, lavender-like scent and is widely used in perfumery, cosmetics, and flavorings, as well as in cleaning products.

Chemically, linalool is a monoterpene alcohol. In air and light it can oxidize to hydroperoxides and other products, which may act as skin sensitizers. This potential for oxidation drives the use of stabilizers and careful formulation in consumer products.

Safety and regulation: Linalool is generally regarded as safe in typical consumer product concentrations, but it is listed as a fragrance allergen in several jurisdictions. Skin users may react to linalool itself or to its oxidized derivatives, particularly with repeated exposure. Regulatory labeling requirements vary by country, and products containing linalool are often required to disclose its presence when used as a fragrance ingredient.