香りと体・環境

Laboratory experiments found that a macrocyclic fragrance ingredient inhibited β-glucuronidase and reduced odor generation in enzyme-treated urine.

Researchers identified sulfur compounds in skin gas collected during stressful interviews. A separate uncontrolled model-odor trial found mood-score changes.

A receptor-guided fragrance study in 17 men reported an accuracy benefit but no reduction in felt fatigue. Inconsistent statistics limit the conclusion.

A study of four hiba-wood rooms found that pleasant impressions and short-term physiological responses did not follow the same pattern.

Ten people compared three hair-color formulations. Researchers examined pleasantness ratings and EEG during and after smelling to explore an evaluation method.

Metallic and mushroom-like compounds were investigated in underarm odor. Laboratory models explored their formation from iron and fatty acids and inhibition by plant extracts.

A study explored fragrance ingredients that reduced sebum-derived fatty acids and converted some into esters, using microbial and enzyme models alongside shampoo and conditioner tests.

In a survey of 1,102 people in Germany, many who preferred fragrance-free products still used scent themselves. We explore overlaps in self-reported health effects and preferences for products and spaces.

A study examined volatile compounds from the head, changes in bacteria after hair washing, and an odor reconstruction by perfumers, revealing a picture built from multiple compounds.

Sweat was collected from 24 men during fear, happiness, and calm conditions to examine volatile-compound patterns and candidate chemicals behind the differences.