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I’m Just Sayin…

A Robert Tisserand Blog

Estrogens in Plastic Labware

The safety of essential oils in puberty, and hormonal effects in general, are important health concerns. In a 2007 research report by Colorado and North Carolina doctors and scientists, in vitro evidence seemed to support the notion that lavender oil and tea tree oil were responsible for breast growth in three young boys, suggesting an estrogenic action. Although this article has subsequently been cited more than 180 times in scientific literature and is still widely [...]

By |February 14th, 2014|Categories: Safety|Tags: , , , , , |4 Comments

Is there such a thing as re-distilled peppermint oil?

Hello Mr. Tisserand, I am curious about re-distilled peppermint. Someone wrote me recently and said that there was no such thing as a re-distilled peppermint. I'd like to know if this is true. Thank you! Brittany A few essential oils are 'rectified'. Because this is also described as “re-distilled” it has given rise to the myth that many essential oils are distilled more than once - 1st, 2nd and 3rd grades, or distillations. But, once [...]

By |January 3rd, 2014|Categories: Q & A|Tags: , , , , |8 Comments

Essential Oils, Stroke Patients, and Bergamot

Dear Mr. Tisserand, I have been a student of essential oils for the last 15 years or so. I have what seems to be a defeating question. I’ve looked for the answer from some people in aromatherapy and tried also to find the answer online. Is there any kind of research on essential oils and healing the brain, whether it be strokes or epilepsy? I am particularly interested in essential oils on healing stroke victims. [...]

By |December 9th, 2013|Categories: Aromatherapy / Research, Q & A|2 Comments

Tea tree oil quality and constituents

I am writing this in response to a recent discussion on various facebook pages about tea tree oil (TTO), and whether a TTO with 51% terpinen-4-ol would be better than one with 41%, or whether 51% suggested adultration. Most TTO is produced in Australia and China, and this article is about the quality of Australian TTO, since the Chinese oils generally do not conform to the Australian standards, and there is no quality standard for [...]

By |July 28th, 2013|Categories: News, Safety|13 Comments

Lemon on the rocks: keep your essential oils cool

Essential oils are happiest when cold. If you keep them refrigerated they will last twice as long, especially if you live in a warm climate. Essential oils are expensive, so you want them to stay active as long as possible! Cold good, oxidation bad With time, most essential oil constituents oxidize, and heat promotes oxidation. Once oxidation starts it’s difficult to stop, though it is a very slow process – it takes months. So if [...]

By |July 26th, 2013|Categories: Safety|30 Comments

Climate Change News 2013: Essential Oils Cool Planet

It now appears that the world would have warmed more than it has were it not for the aromatic cocktail of chemicals emitted by plants. It turns out that this can change the weather - and anything that changes the weather day after day and year after year changes the climate too. While this mechanism is nowhere near strong enough to save us from global warming, it may have been stronger in the past when [...]

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