Fewer oxidative stress markers in keratinocytes
LaboratoryCharacterized oregano essential oilHuman NCTC 2544 keratinocytesStimulated with interferon-γ and histamine
The oil reduces reactive oxygen species, ICAM-1, iNOS, COX-2, the DNA damage marker 8-OHdG and the metalloproteinases MMP-1 and MMP-12, and promotes cell migration in a scratch test. A cell culture result on the oil, not on the powder7.
A cosmeceutical interest that is mostly antimicrobial
Review2022 reviewOregano essential oil
The review ties the cosmeceutical interest of the oil to thymol and carvacrol. Work mostly covers antimicrobial activity and micro- and nanoemulsion formulations for topical application8.
An isolated glucoside reduces pigmentation in culture
LaboratoryOriganoside, a molecule isolated from oreganoB16 cells and Hs68 fibroblasts12 mice, gel for 10 days
Origanoside reduces the expression of MITF, tyrosinase and TRP-2 in culture; in mice, the skin lightens. A single isolated molecule, no human trial: the result applies neither to the powder nor to a finished product9.