Esselamu Aleykum and hi to all, The pure rose oils contain a considerable percentage of a chemical called Methyl Eugenol (around 3% according to some online sources). This chemical has been shown to be carcinogenic and to cause cancer in rats. Here is one such article: https://ec.europa.eu/food/sites/foo...ood-improvement-agents_flavourings-out102.pdf. This one mentions the amounts found in some essential oils: https://oxfordbiosciences.com/essential-oils/ And here is an IFRA guideline on the amount of rose essential oil an end product can contain. IFRA is maybe too strict though. https://www.nhrorganicoils.com/uploads/20171214143617e_Rose_Otto_IFRA_47.pdf So we could try reducing the amount and/or the frequency of wearing pure rose oils, or try applying it to the clothes instead of skin. If anyone knows anything more about the safety or hazards of other essential oils, they can hopefully contribute as well.