香りと体・環境

Repeated exposure to linalool hydroperoxides elicited eczema in some already-sensitized patients, with fewer reactions at lower concentrations.

A 28-day cream study explores how positive linalool-hydroperoxide patch tests relate to everyday-type skin exposure.

Does exposure to a symptom-triggering odor also alter immune-related substances in the nose? A study of 18 people with MCS and 18 healthy controls tested a hypothesis about local inflammation.

A life-cycle assessment of 27 fragrance ingredients shows why production processes and assessment methods matter more than origin labels alone.

A Swedish patch-test study distinguishes the small extra yield of routine HICC testing from the value of testing individual ingredients after a positive fragrance-mix result.

A dose-finding study selected test conditions for five fragrance materials. Zero positive results did not establish the absence of consumer sensitization risk.

Patch testing in dermatitis patients found reactions to oxidized lavender oil that tests of its two main oxidized components did not always detect.

Cell and zebrafish experiments identify receptor activity and developmental signals, not proof that perfume use causes earlier puberty in humans.

In 25 young men, an apple fragrance reduced task-related cardiac changes compared with controls, without improving arithmetic performance.

A home study of 131 adults explored self-chosen fragrances and delivery methods. Subjective differences did not establish improvements in device-measured sleep.