Personal care products disrupt the human oxidation field.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 40397733.
- Also identified by DOI 10.1126/sciadv.ads7908 and PMC identifier 12094237.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
People generate hydroxyl radicals (OH) in the presence of ozone via the ozonolysis of skin-emitted alkenes. In this study, we found that the application of personal care products (PCPs) including fragrances and body lotions suppresses the human oxidation field. Body lotion hampers the generation of 6-methyl-5-hepten-2-one, a key OH precursor, while many volatile ingredients of PCPs enhance OH loss in the gas phase. Although fragrances contain terpenes capable of generating OH through ozonolysis, the much larger amount of ethanol solvent acts as a large OH sink. We combined a multiphase chemical kinetic model and a computational fluid dynamics model to demonstrate how the concentrations of the reactive components develop in the indoor environment. These findings have implications for the indoor chemistry of occupied spaces and human health.
Medical subject headings
- Cosmetics