Linalool, ( )- is a fragrance ingredient used in decorative cosmetics, fine fragrances, shampoos, toilet soaps and other toiletries as well as in non-cosmetic products such as household cleaners and detergents. Its use worldwide is in the region of less than 0.1 metric tonnes per annum. The maximum skin level that results from the use of d-linalool in formulae that go into fine fragrances has been reported to be 0.13% assuming use of the fragrance oil at levels up to 20% in the final product. Linalool is used by pest professionals as a flea, fruit fly, and cockroach insecticide. It can also be used a method of pest control for codling moths. Linalool creates a synergistic effect with the codling moth's pheromone called codlemone, which increases the attraction of males. Linalool can be absorbed by inhalation of its aerosol and by oral intake or skin absorption, potentially causing irritation, pain and allergic reactions.

Hydroxycitronellal is a perfume ingredient with a medium strength floral scent, reminiscent of lily and sweet tropical melon. It is produced synthetically from naturally occurring scent chemical citronellal. It is on the CFR - Code of Federal Regulations Title 21 list of synthetic flavoring substances and adjuvants. Hydroxycitronellal is banned in the European Union because of its toxic properties. Hydroxycitronellal is an allergen. Hydroxycitronellal has being shown to consistently modulate CCR5, CCL27, CCL2 and CCR7 in immature dendritic cells. Hydroxycitronellal is a TRPM8 agonist.